epyt 1.1.2

EPyT: An EPANET-Python Toolkit for Smart Water Network Simulations. The EPyT is inspired by the EPANET-Matlab Toolkit.

EPANET Python Toolkit (EPyT)

The EPANET-Python Toolkit is an open-source software, originally developed by the KIOS Research and Innovation Center of Excellence, University of Cyprus which operates within the Python environment, for providing a programming interface for the latest version of EPANET, a hydraulic and quality modeling software created by the US EPA, with Python, a high-level technical computing software. The goal of the EPANET Python Toolkit is to serve as a common programming framework for research and development in the growing field of smart water networks.

The EPANET-Python Toolkit features easy to use commands/wrappers for viewing, modifying, simulating and plotting results produced by the EPANET libraries.

For support, please use the OWA community forum : http://community.wateranalytics.org/

Table of Contents

• EPANET Python Toolkit (EPyT)
• How to cite
• Requirements
• How to install
• How to use the Toolkit
• How to fix/report bugs
• Licenses
• Contributors
• Contributing
• Recommendation
• List of Python Class Functions
• List of EPANET 2.2 Functions

How to cite

Kyriakou, M. S., Demetriades, M., Vrachimis, S. G., Eliades, D. G., & Polycarpou, M. M. (2023). EPyT: An EPANET-Python Toolkit for Smart Water Network Simulations. Journal of Open Source Software, 8(92), 5947. https://doi.org/10.21105/joss.05947

@article{Kyriakou2023,
author = {Kyriakou, Marios S. and Demetriades, Marios and Vrachimis, Stelios G. and Eliades, Demetrios G. and Polycarpou, Marios M.},
doi = {10.21105/joss.05947},
journal = {Journal of Open Source Software},
month = dec,
number = {92},
pages = {5947},
title = {{EPyT: An EPANET-Python Toolkit for Smart Water Network Simulations}},
url = {https://joss.theoj.org/papers/10.21105/joss.05947},
volume = {8},
year = {2023}
}

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Requirements

• Python >=3.8
• Windows, OSX or Linux
• EPANET 2.2

Linux: sudo cp libepanet2.so /lib/x86_64-linux-gnu/libepanet.so

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How to install

Environments -> base (root) -> open terminal -> pip install epyt

• PyPI: pip install epyt

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How to use the Toolkit

Minimum Example:

>>> from epyt import epanet
>>> 
>>> d = epanet('Net1.inp')
>>> d.getNodeCount()
>>> d.getNodeElevations()

Minumun Example using custom Library:

>>> from epyt import epanet
>>>
>>>epanetlib=os.path.join(os.getcwd(), 'epyt','libraries','win','epanet2.dll')
>>>msxlib=os.path.join(os.getcwd(), 'epyt','libraries','win','epanetmsx.dll')
>>>d = epanet(inpname, customlib=epanetlib)
>>>d.loadMSXFile(msxname, customMSXlib=msxlib)

More examples:

https://github.com/KIOS-Research/EPYT/tree/main/epyt/examples

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How to fix/report bugs

To fix a bug Fork the EPyT, Edit the code and make the appropriate change, and then Pull it so that we evaluate it.

Keep in mind that some bugs may exist in the EPANET libraries, in case you are not receiving the expected results.

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Licenses

• EPANET: Public Domain
• EPANET-Python Toolkit (EPyT): EUPL

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Contributors

• Marios Kyriakou, KIOS Research and Innovation Center of Excellence, University of Cyprus
• Marios Demetriades, KIOS Research and Innovation Center of Excellence, University of Cyprus
• Stelios Vrachimis, KIOS Research and Innovation Center of Excellence, University of Cyprus
• Demetrios Eliades, KIOS Research and Innovation Center of Excellence, University of Cyprus

The EPyT is based/inspired on the EPANET-Matlab Toolkit.

Contributing

If you want to contribute, please check out our Code of Conduct. Everyone is welcome to contribute whether reporting a new issue, suggesting a new feature, or writing code. If you want to contribute code, you can create a new fork in the repo to your own account. Make your commits on your dev branch (based on dev) and when you are finished then you can create a pull request to test the code and discuss your changes.

Recommendation

• Install Anaconda
  
• Run EPyT with Spyder IDE
• Run EPyT with PyCharm

Settings on Spyder IDE

• Tools -> Preferrences
• View -> Window layouts -> Matlab layout
• Enable interactive plot on matlibplot : Tools -> Preferences -> IPython console -> Graphics -> Graphics backend -> Backend: Automatic

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List of Python Class Functions

Function	Description
addControls	Adds a new simple control
addCurve	Adds a new curve appended to the end of the existing curves
addLinkPipe	Adds a new pipe
addLinkPipeCV	Adds a new control valve pipe
addLinkPump	Adds a new pump
addLinkValveFCV	Adds a new FCV valve
addLinkValveGPV	Adds a new GPV valve
addLinkValvePBV	Adds a new PBV valve
addLinkValvePRV	Adds a new PRV valve
addLinkValvePSV	Adds a new PSV valve
addLinkValveTCV	Adds a new TCV valve
addNodeJunction	Adds a new junction
addNodeJunctionDemand	Adds a new demand to a junction given the junction index, base demand, demand time pattern and demand category name
addNodeReservoir	Adds a new reservoir
addNodeTank	Adds a new tank
addPattern	Adds a new time pattern to the network
addRules	Adds a new rule-based control to a project
appRotateNetwork	Rotates the network by theta degrees counter-clockwise
appShiftNetwork	Shifts the network
clearReport	Clears the contents of a project's report file
closeHydraulicAnalysis	Closes the hydraulic analysis system, freeing all allocated memory
closeNetwork	Closes down the Toolkit system
closeQualityAnalysis	Closes the water quality analysis system, freeing all allocated memory
copyReport	Copies the current contents of a project's report file to another file
createProject	Creates a new epanet projec
deleteAllTemps	Delete all temporary files (.inp, .bin) created in networks folder
deleteControls	Deletes an existing simple control
deleteCurve	Deletes a data curve from a project
deleteLink	Deletes a link
deleteNode	Deletes nodes
deletePattern	Deletes a time pattern from a project
deletePatternsAll	Deletes all time patterns from a project
deleteProject	Deletes the epanet project
deleteRules	Deletes an existing rule-based control given it's index
getAdjacencyMatrix	Compute the adjacency matrix (connectivity graph) considering the flows, using mean flow
getCMDCODE	Retrieves the CMC code
getComputedHydraulicTimeSeries	Computes hydraulic simulation and retrieves all time-series
getComputedQualityTimeSeries	Computes Quality simulation and retrieves all or some time-series
getComputedTimeSeries	Run analysis with binary fil
getConnectivityMatrix	Retrieve the Connectivity Matrix of the networ
getControlRulesCount	Retrieves the number of controls
getControls	Retrieves the parameters of all control statements
getCounts	Retrieves the number of network components
getCurveComment	Retrieves the comment string of a curve
getCurveCount	Retrieves the number of curves
getCurveIndex	Retrieves the index of a curve with specific ID
getCurveLengths	Retrieves number of points in a curve
getCurveNameID	Retrieves the IDs of curves
getCurveType	Retrieves the curve-type for all curves
getCurveTypeIndex	Retrieves the curve-type index for all curves
getCurveValue	Retrieves the X, Y values of points of curves
getCurvesInfo	Retrieves all the info of curves
getDemandModel	Retrieves the type of demand model in use and its parameters
getENfunctionsImpemented	Retrieves the epanet functions that have been developed
getError	Retrieves the text of the message associated with a particular error or warning code
getFlowUnits	Retrieves flow units used to express all flow rates
getLibFunctions	Retrieves the functions of DLL
getLinkActualQuality	Retrieves the current computed link quality (read only)
getLinkBulkReactionCoeff	Retrieves the value of all link bulk chemical reaction coefficient
getLinkComment	Retrieves the comment string assigned to the link object
getLinkCount	Retrieves the number of links
getLinkDiameter	Retrieves the value of link diameters
getLinkEnergy	Retrieves the current computed pump energy usage (read only)
getLinkFlows	Retrieves the current computed flow rate (read only)
getLinkHeadloss	Retrieves the current computed head loss (read only)
getLinkIndex	Retrieves the indices of all links, or the indices of an ID set of links
getLinkInitialSetting	Retrieves the value of all link roughness for pipes or initial speed for pumps or initial setting for valves
getLinkInitialStatus	Retrieves the value of all link initial status
getLinkLength	Retrieves the value of link lengths
getLinkMinorLossCoeff	Retrieves the value of link minor loss coefficients
getLinkNameID	Retrieves the ID label(s) of all links, or the IDs of an index set of links
getLinkNodesIndex	Retrieves the indexes of the from/to nodes of all links
getLinkPipeCount	Retrieves the number of pipes
getLinkPipeIndex	Retrieves the pipe indices
getLinkPipeNameID	Retrieves the pipe ID
getLinkPumpCount	Retrieves the number of pumps
getLinkPumpECost	Retrieves the pump average energy price
getLinkPumpECurve	Retrieves the pump efficiency v
getLinkPumpEPat	Retrieves the pump energy price time pattern index
getLinkPumpEfficiency	Retrieves the current computed pump efficiency (read only)
getLinkPumpHCurve	Retrieves the pump head v
getLinkPumpHeadCurveIndex	Retrieves the index of a head curve for all pumps
getLinkPumpIndex	Retrieves the pump indices
getLinkPumpNameID	Retrieves the pump ID
getLinkPumpPatternIndex	Retrieves the pump speed time pattern index
getLinkPumpPatternNameID	Retrieves pump pattern name ID
getLinkPumpPower	Retrieves the pump constant power rating (read only)
getLinkPumpState	Retrieves the current computed pump state (read only) (see @ref EN_PumpStateType)
getLinkPumpSwitches	Retrieves the number of pump switches
getLinkPumpType	Retrieves the type of a pump
getLinkPumpTypeCode	Retrieves the code of type of a pump
getLinkQuality	Retrieves the value of link quality
getLinkResultIndex	Retrieves the order in which a link's results were saved to an output file
getLinkRoughnessCoeff	Retrieves the value of link roughness coefficient
getLinkSettings	Retrieves the current computed value of all link roughness for pipes or actual speed for pumps or actual setting for valves
getLinkStatus	Retrieves the current link status (see @ref EN_LinkStatusType) (0 = closed, 1 = open)
getLinkType	Retrieves the link-type code for all links
getLinkTypeIndex	Retrieves the link-type code for all links
getLinkValveCount	Retrieves the number of valves
getLinkValveIndex	Retrieves the valve indices
getLinkValveNameID	Retrieves the valve ID
getLinkVelocity	Retrieves the current computed flow velocity (read only)
getLinkVertices	Retrieves the coordinate's of a vertex point assigned to a link
getLinkVerticesCount	Retrieves the number of internal vertex points assigned to a link
getLinkWallReactionCoeff	Retrieves the value of all pipe wall chemical reaction coefficient
getLinksInfo	Retrieves all link info
getNetworksDatabase	Retrieves all EPANET Input Files from EPyT database
getNodeActualDemand	Retrieves the computed value of all node actual demands
getNodeActualDemandSensingNodes	Retrieves the computed demand values at some sensing nodes
getNodeActualQuality	Retrieves the computed values of the actual quality for all nodes
getNodeActualQualitySensingNodes	Retrieves the computed quality values at some sensing node
getNodeBaseDemands	Retrieves the value of all node base demands
getNodeComment	Retrieves the comment string assigned to the node object
getNodeCoordinates
getNodeCount	Retrieves the number of nodes
getNodeDemandCategoriesNumber	Retrieves the value of all node base demands categorie number
getNodeDemandDeficit	Retrieves the amount that full demand is reduced under PDA
getNodeDemandPatternIndex	Retrieves the value of all node base demands pattern index
getNodeDemandPatternNameID	Retrieves the value of all node base demands pattern name ID
getNodeElevations	Retrieves the value of all node elevations
getNodeEmitterCoeff	Retrieves the value of all node emmitter coefficients
getNodeHydraulicHead	Retrieves the computed values of all node hydraulic heads
getNodeIndex	Retrieves the indices of all nodes or some nodes with a specified ID
getNodeInitialQuality	Retrieves the value of all node initial quality
getNodeJunctionCount	Retrieves the number of junction nodes
getNodeJunctionDemandIndex	Retrieves the demand index of the junctions
getNodeJunctionDemandName	Gets the name of a node's demand category
getNodeJunctionIndex	Retrieves the indices of junctions
getNodeJunctionNameID	Retrieves the junction ID label
getNodeMassFlowRate	Retrieves the computed mass flow rates per minute of chemical sources for all nodes
getNodeNameID	Retrieves the ID label of all nodes or some nodes with a specified index
getNodePatternIndex	Retrieves the value of all node demand pattern indices
getNodePressure	Retrieves the computed values of all node pressures
getNodeReservoirCount	Retrieves the number of Reservoirs
getNodeReservoirIndex	Retrieves the indices of reservoirs
getNodeReservoirNameID	Retrieves the reservoir ID label
getNodeResultIndex	Retrieves the order in which a node's results were saved to an output file
getNodeSourcePatternIndex	Retrieves the value of all node source pattern index
getNodeSourceQuality	Retrieves the value of all node source quality
getNodeSourceType	Retrieves the value of all node source type
getNodeSourceTypeIndex	Retrieves the value of all node source type index
getNodeTankBulkReactionCoeff	Retrieves the tank bulk rate coefficient
getNodeTankCanOverFlow	Retrieves the tank can overflow (= 1) or not (= 0)
getNodeTankCount	Retrieves the number of Tanks
getNodeTankData	Retrieves a group of properties for a tank
getNodeTankDiameter	Retrieves the tank diameters
getNodeTankIndex	Retrieves the tank indices
getNodeTankInitialLevel	Retrieves the value of all tank initial water levels
getNodeTankInitialWaterVolume	Retrieves the tank initial water volume
getNodeTankMaximumWaterLevel	Retrieves the tank maximum water level
getNodeTankMaximumWaterVolume	Retrieves the tank maximum water volume
getNodeTankMinimumWaterLevel	Retrieves the tank minimum water level
getNodeTankMinimumWaterVolume	Retrieves the tank minimum water volume
getNodeTankMixZoneVolume	Retrieves the tank mixing zone volume
getNodeTankMixingFraction	Retrieves the tank Fraction of total volume occupied by the inlet/outlet zone in a 2-compartment tank
getNodeTankMixingModelCode	Retrieves the tank mixing model code
getNodeTankMixingModelType	Retrieves the tank mixing model type
getNodeTankNameID	Retrieves the tank IDs
getNodeTankReservoirCount	Retrieves the number of tanks
getNodeTankVolume	Retrieves the tank volume
getNodeTankVolumeCurveIndex	Retrieves the tank volume curve index
getNodeType	Retrieves the node-type code for all nodes
getNodeTypeIndex	Retrieves the node-type code for all nodes
getNodesConnectingLinksID	Retrieves the id of the from/to nodes of all links
getNodesConnectingLinksIndex	Retrieves the indexes of the from/to nodes of all links
getNodesInfo	Retrieves nodes info (elevations, demand patterns, emmitter coeff, initial quality, source quality, source pattern index, source type index, node type index)
getOptionsAccuracyValue	Retrieves the total normalized flow change for hydraulic convergence
getOptionsCheckFrequency	Retrieves the frequency of hydraulic status checks
getOptionsDampLimit	Retrieves the accuracy level where solution damping begins
getOptionsDemandCharge	Retrieves the energy charge per maximum KW usage
getOptionsEmitterExponent	Retrieves the power exponent for the emmitters
getOptionsExtraTrials	Retrieves the extra trials allowed if hydraulics don't converge
getOptionsFlowChange	Retrieves the maximum flow change for hydraulic convergence
getOptionsGlobalEffic	Retrieves the global efficiency for pumps(percent)
getOptionsGlobalPattern	Retrieves the index of the global energy price pattern
getOptionsGlobalPrice	Retrieves the global average energy price per kW-Hour
getOptionsHeadError	Retrieves the maximum head loss error for hydraulic convergence
getOptionsHeadLossFormula	Retrieves the headloss formula
getOptionsLimitingConcentration	Retrieves the limiting concentration for growth reactions
getOptionsMaxTrials	Retrieves the maximum hydraulic trials allowed for hydraulic convergence
getOptionsMaximumCheck	Retrieves the maximum trials for status checking
getOptionsPatternDemandMultiplier	Retrieves the global pattern demand multiplier
getOptionsPipeBulkReactionOrder	Retrieves the bulk water reaction order for pipes
getOptionsPipeWallReactionOrder	Retrieves the wall reaction order for pipes (either 0 or 1)
getOptionsQualityTolerance	Retrieves the water quality analysis tolerance
getOptionsSpecificDiffusivity	Retrieves the specific diffusivity (relative to chlorine at 20 deg C)
getOptionsSpecificGravity	Retrieves the specific gravity
getOptionsSpecificViscosity	Retrieves the specific viscosity
getOptionsTankBulkReactionOrder	Retrieves the bulk water reaction order for tanks
getPattern	Retrieves the multiplier factor for all patterns and all times
getPatternAverageValue	Retrieves the average values of all the time patterns
getPatternComment	Retrieves the comment string assigned to the pattern object
getPatternCount	Retrieves the number of patterns
getPatternIndex	Retrieves the index of all or some time patterns given their IDs
getPatternLengths	Retrieves the number of time periods in all or some time patterns
getPatternNameID	Retrieves the ID label of all or some time patterns indices
getPatternValue	Retrieves the multiplier factor for a certain pattern and time
getQualityCode	Retrieves the code of water quality analysis type
getQualityInfo	Retrieves quality analysis information (type, chemical name, units, trace node ID)
getQualityTraceNodeIndex	Retrieves the trace node index of water quality analysis type
getQualityType	Retrieves the type of water quality analysis type
getRuleCount	Retrieves the number of rules
getRuleID	Retrieves the ID name of a rule-based control given its index
getRuleInfo	Retrieves summary information about a rule-based control given it's index
getRules	Retrieves the rule - based control statements
getStatistic	Returns error code
getTimeHTime	Retrieves the elapsed time of current hydraulic solution
getTimeHaltFlag	Retrieves the number of halt flag indicating if the simulation was halted
getTimeHydraulicStep	Retrieves the value of the hydraulic time step
getTimeNextEvent	Retrieves the shortest time until a tank becomes empty or full
getTimeNextEventTank	Retrieves the index of tank with shortest time to become empty or full
getTimePatternStart	Retrieves the value of pattern start time
getTimePatternStep	Retrieves the value of the pattern time step
getTimeQTime	Retrieves the elapsed time of current quality solution
getTimeQualityStep	Retrieves the value of the water quality time step
getTimeReportingPeriods	Retrieves the number of reporting periods saved to the binary
getTimeReportingStart	Retrieves the value of the reporting start time
getTimeReportingStep	Retrieves the value of the reporting time step
getTimeRuleControlStep	Retrieves the time step for evaluating rule-based controls
getTimeSimulationDuration	Retrieves the value of simulation duration
getTimeStartTime	Retrieves the simulation starting time of day
getTimeStatisticsIndex	Retrieves the index of the type of time series post-processing
getTimeStatisticsType	Retrieves the type of time series post-processing
getTitle	Retrieves the title lines of the project
getUnits	Retrieves the Units of Measurement
getVersion	Retrieves the current EPANET version of DLL
initializeEPANET	Initializes an EPANET project that isn't opened with an input fil
initializeHydraulicAnalysis	Initializes storage tank levels, link status and settings, and the simulation clock time prior to running a hydraulic analysis
initializeQualityAnalysis	Initializes water quality and the simulation clock time prior to running a water quality analysis
loadEPANETFile	Load epanet file when use bin functions
nextHydraulicAnalysisStep	Determines the length of time until the next hydraulic event occurs in an extended period simulation
nextQualityAnalysisStep	Advances the water quality simulation to the start of the next hydraulic time period
openAnyInp	Open as on matlab editor any EPANET input file using built function open
openCurrentInp	Opens EPANET input file who is loade
openHydraulicAnalysis	Opens the hydraulics analysis system
openQualityAnalysis	Opens the water quality analysis system
plot	Plot Network, show all components, plot pressure/flow/elevation
plot_close	Close all open figures
plot_save	Save plot
plot_show	Show plot
reloadNetwork	Reloads the Network (ENopen)
runEPANETexe	Runs epanet .exe file
runHydraulicAnalysis	Runs a single period hydraulic analysis, retrieving the current simulation clock time t
runQualityAnalysis	Makes available the hydraulic and water quality results that occur at the start of the next time period of a water quality analysis, where the start of the period is returned in t
runsCompleteSimulation	Runs a complete hydraulic and water simulation to create binary & report files with name: [NETWORK_temp.txt], [NETWORK_temp.bin] OR you can use argument to runs a complete simulation via self.api.en_epane
saveHydraulicFile	Saves the current contents of the binary hydraulics file to a file
saveHydraulicsOutputReportingFile	Transfers results of a hydraulic simulation from the binary Hydraulics file to the binary Output file, where results are only reported at uniform reporting intervals
saveInputFile	Writes all current network input data to a file using the format of an EPANET input file
setCMDCODE	Sets the CMC code
setControls	Sets the parameters of a simple control statement
setCurve	Sets x, y values for a specific curve
setCurveComment	Sets the comment string of a curve
setCurveNameID	Sets the name ID of a curve given it's index and the new ID
setCurveValue	Sets x, y point for a specific point number and curve
setDemandModel	Sets the type of demand model to use and its parameters
setFlowUnitsAFD	Sets flow units to AFD(Acre-Feet per Day)
setFlowUnitsCFS	Sets flow units to CFS(Cubic Feet per Second)
setFlowUnitsCMD	Sets flow units to CMD(Cubic Meters per Day)
setFlowUnitsCMH	Sets flow units to CMH(Cubic Meters per Hour)
setFlowUnitsGPM	Sets flow units to GPM(Gallons Per Minute)
setFlowUnitsIMGD	Sets flow units to IMGD(Imperial Million Gallons per Day)
setFlowUnitsLPM	Sets flow units to LPM(Liters Per Minute)
setFlowUnitsLPS	Sets flow units to LPS(Liters Per Second)
setFlowUnitsMGD	Sets flow units to MGD(Million Gallons per Day)
setFlowUnitsMLD	Sets flow units to MLD(Million Liters per Day)
setLinkBulkReactionCoeff	Sets the value of bulk chemical reaction coefficient
setLinkComment	Sets the comment string assigned to the link object
setLinkDiameter	Sets the values of diameters
setLinkInitialSetting	Sets the values of initial settings, roughness for pipes or initial speed for pumps or initial setting for valves
setLinkInitialStatus	Sets the values of initial status
setLinkLength	Sets the values of lengths
setLinkMinorLossCoeff	Sets the values of minor loss coefficient
setLinkNameID	Sets the ID name for links
setLinkNodesIndex	Sets the indexes of a link's start- and end-nodes
setLinkPipeData	Sets a group of properties for a pipe
setLinkPumpECost	Sets the pump average energy price
setLinkPumpECurve	Sets the pump efficiency v
setLinkPumpEPat	Sets the pump energy price time pattern index
setLinkPumpHCurve	Sets the pump head v
setLinkPumpHeadCurveIndex	Sets the curves index for pumps index
setLinkPumpPatternIndex	Sets the pump speed time pattern index
setLinkPumpPower	Sets the power for pumps
setLinkRoughnessCoeff	Sets the values of roughness coefficient
setLinkSettings	Sets the values of current settings, roughness for pipes or initial speed for pumps or initial setting for valves
setLinkStatus	Sets the values of current status for links
setLinkTypePipe	Sets the link type pipe for a specified link
setLinkTypePipeCV	Sets the link type cvpipe(pipe with check valve) for a specified link
setLinkTypePump	Sets the link type pump for a specified link
setLinkTypeValveFCV	Sets the link type valve FCV(flow control valve) for a specified link
setLinkTypeValveGPV	Sets the link type valve GPV(general purpose valve) for a specified link
setLinkTypeValvePBV	Sets the link type valve PBV(pressure breaker valve) for a specified link
setLinkTypeValvePRV	Sets the link type valve PRV(pressure reducing valve) for a specified link
setLinkTypeValvePSV	Sets the link type valve PSV(pressure sustaining valve) for a specified link
setLinkTypeValveTCV	Sets the link type valve TCV(throttle control valve) for a specified link
setLinkVertices	Assigns a set of internal vertex points to a link
setLinkWallReactionCoeff	Sets the value of wall chemical reaction coefficient
setNodeBaseDemands	Sets the values of demand for nodes
setNodeComment	Sets the comment string assigned to the node object
setNodeCoordinates	Sets node coordinates
setNodeDemandPatternIndex	Sets the values of demand time pattern indices
setNodeElevations	Sets the values of elevation for nodes
setNodeEmitterCoeff	Sets the values of emitter coefficient for nodes
setNodeInitialQuality	Sets the values of initial quality for nodes
setNodeJunctionData	Sets a group of properties for a junction node
setNodeJunctionDemandName	Assigns a name to a node's demand category
setNodeNameID	Sets the ID name for nodes
setNodeSourcePatternIndex	Sets the values of quality source pattern index
setNodeSourceQuality	Sets the values of quality source strength
setNodeSourceType	Sets the values of quality source type
setNodeTankBulkReactionCoeff	Sets the tank bulk reaction coefficient
setNodeTankCanOverFlow	Sets the tank can-overflow (= 1) or not (= 0)
setNodeTankData	Sets a group of properties for a tank
setNodeTankDiameter	Sets the diameter value for tanks
setNodeTankInitialLevel	Sets the values of initial level for tanks
setNodeTankMaximumWaterLevel	Sets the maximum water level value for tanks
setNodeTankMinimumWaterLevel	Sets the minimum water level value for tanks
setNodeTankMinimumWaterVolume	Sets the minimum water volume value for tanks
setNodeTankMixingFraction	Sets the tank mixing fraction of total volume occupied by the inlet/outlet zone in a 2-compartment tank
setNodeTankMixingModelType	Sets the mixing model type value for tanks
setNodeTypeJunction	Transforms a node to JUNCTION The new node keeps the id,coordinates and elevation of the deleted on
setNodeTypeReservoir	Transforms a node to RESERVOIR The new node keeps the id,coordinates and elevation of the deleted on
setNodeTypeTank	Transforms a node to TANK The new node keeps the id,coordinates and elevation of the deleted on
setNodesConnectingLinksID	Sets the IDs of a link's start- and end-nodes
setOptionsAccuracyValue	Sets the total normalized flow change for hydraulic convergence
setOptionsCheckFrequency	Sets the frequency of hydraulic status checks
setOptionsDampLimit	Sets the accuracy level where solution damping begins
setOptionsDemandCharge	Sets the energy charge per maximum KW usage
setOptionsEmitterExponent	Sets the power exponent for the emmitters
setOptionsExtraTrials	Sets the extra trials allowed if hydraulics don't converge
setOptionsFlowChange	Sets the maximum flow change for hydraulic convergence
setOptionsGlobalEffic	Sets the global efficiency for pumps(percent)
setOptionsGlobalPattern	Sets the global energy price pattern
setOptionsGlobalPrice	Sets the global average energy price per kW-Hour
setOptionsHeadError	Sets the maximum head loss error for hydraulic convergence
setOptionsHeadLossFormula	Sets the headloss formula
setOptionsLimitingConcentration	Sets the limiting concentration for growth reactions
setOptionsMaxTrials	Sets the maximum hydraulic trials allowed for hydraulic convergence
setOptionsMaximumCheck	Sets the maximum trials for status checking
setOptionsPatternDemandMultiplier	Sets the global pattern demand multiplier
setOptionsPipeBulkReactionOrder	Sets the bulk water reaction order for pipes
setOptionsPipeWallReactionOrder	Sets the wall reaction order for pipes (either 0 or 1)
setOptionsQualityTolerance	Sets the water quality analysis tolerance
setOptionsSpecificDiffusivity	Sets the specific diffusivity (relative to chlorine at 20 deg C)
setOptionsSpecificGravity	Sets the specific gravity
setOptionsSpecificViscosity	Sets the specific viscosity
setOptionsTankBulkReactionOrder	Sets the bulk water reaction order for tanks
setPattern	Sets all of the multiplier factors for a specific time pattern
setPatternComment	Sets the comment string assigned to the pattern object
setPatternMatrix	Sets all of the multiplier factors for all time patterns
setPatternNameID	Sets the name ID of a time pattern given it's index and the new ID
setPatternValue	Sets the multiplier factor for a specific period within a time pattern
setQualityType	Sets the type of water quality analysis called for
setReport	Issues a report formatting command
setReportFormatReset	Resets a project's report options to their default values
setReportStatus	Sets the level of hydraulic status reporting
setRuleElseAction	Sets rule - based control else actions
setRulePremise	Sets the premise of a rule - based control
setRulePremiseObejctNameID	Sets the ID of an object in a premise of a rule-based control
setRulePremiseStatus	Sets the status being compared to in a premise of a rule-based control
setRulePremiseValue	Sets the value being compared to in a premise of a rule-based control
setRulePriority	Sets rule - based control priority
setRuleThenAction	Sets rule - based control then actions
setRules	Sets a rule - based control
setTimeHydraulicStep	Sets the hydraulic time step
setTimePatternStart	Sets the time when time patterns begin
setTimePatternStep	Sets the time pattern step
setTimeQualityStep	Sets the quality time step
setTimeReportingStart	Sets the time when reporting starts
setTimeReportingStep	Sets the reporting time step
setTimeRuleControlStep	Sets the rule-based control evaluation time step
setTimeSimulationDuration	Sets the simulation duration (in seconds)
setTimeStatisticsType	Sets the statistic type
setTitle	Sets the title lines of the project
solveCompleteHydraulics	Runs a complete hydraulic simulation with results for all time periods written to the binary Hydraulics file
solveCompleteQuality	Runs a complete water quality simulation with results at uniform reporting intervals written to EPANET's binary Output file
splitPipe	Splits a pipe, creating two new pipes and adds a junction/node in between
stepQualityAnalysisTimeLeft	Advances the water quality simulation one water quality time step
unload	unload library and close the EPANET Toolkit system
useHydraulicFile	Uses the contents of the specified file as the current binary hydraulics file
writeLineInReportFile	Writes a line of text to the EPANET report file
writeReport	Writes a formatted text report on simulation results to the Report file
MSX Functions
loadMSXFile	Opens the EPANET-MSX toolkit system
unloadMSX	Closes the EPANET-MSX toolkit system
addMSXPattern	Adds a new, empty MSX source time pattern to the project
initializeMSXQualityAnalysis	Initializes the MSX system before solving for water quality results in step-wise fashion
stepMSXQualityAnalysisTimeLeft	Advances the water quality solution through a single water quality time step when performing a step-wise simulation
saveMSXFile	Saves the data associated with the current MSX project into a new MSX input file
saveMSXQualityFile	Saves water quality results computed for each node, link and reporting time period to a named binary file
getMSXSourcePatternIndex	Retrieves the value of all node source pattern index
getMSXLinkInitqualValue	Retrieves the initial concentration of chemical species assigned to links of the pipe network
getMSXNodeInitqualValue	Retrieves the initial concentration of chemical species assigned to nodes
getMSXSourceLevel	Retrieves the value of all nodes source level
getMSXSourceType	Retrieves the value of all node source type
getMSXSourceNodeNameID	Retrieves the ID label of all nodes
getMSXSpeciesCount	Retrieves the number of species
getMSXSpeciesNameID	Retrieves the species IDs
getMSXSpeciesIndex	Retrieves the indices of species
getMSXSpeciesType	Retrieves the type of all species (BULK/WALL)
getMSXSpeciesUnits	Retrieves the species mass units
getMSXSpeciesATOL	Retrieves the atol
getMSXSpeciesRTOL	Retrieves the rtol
getMSXSpeciesConcentration	Retrieves the concentration of chemical species for nodes and links
getMSXConstantsCount	Retrieves the number of constants
getMSXConstantsNameID	Retrieves the ID name of constants (given its internal index number)
getMSXConstantsIndex	Retrieves the internal index number of constants (given its ID name)
getMSXPattern	Retrieves the multiplier factor for all patterns and all times
getMSXPatternsCount	Retrieves the number of patterns
getMSXPatternValue	Retrieves the multiplier at a specific time period for a given source time pattern
getMSXPatternsNameID	Retrieves the patterns IDs
getMSXPatternsIndex	Retrieves the indices of patterns
getMSXPatternsLengths	Retrieves the number of time periods in all or some patterns
getMSXParametersCount	Retrieves the number of parameters
getMSXParametersNameID	Retrieves the ID name of parameters
getMSXParametersIndex	Retrieves the indices of parameters
getMSXParametersPipesValue	Retrieves the value of reaction parameters for pipes
getMSXParametersTanksValue	Retrieves the value of reaction parameters for tanks
solveMSXCompleteHydraulics	Solves for system hydraulics over the entire simulation period saving results to an internal scratch file
solveMSXCompleteQuality	Solves for water quality over the entire simulation period and saves the results to an internal scratch file
getMSXError	Returns the text for an error message given its error code
getMSXOptions	Retrieves all the msx option parameters
getMSXTimeStep	Retrieves the time step
getMSXRateUnits	Retrieves the rate/time units (SEC/MIN/HR/DAY)
getMSXAreaUnits	Retrieves the area units (FT2/M2/CM2)
getMSXCompiler	Retrieves the compiler (NONE/VC/GC)
getMSXCoupling	Retrieves the coupling (FULL/NONE)
getMSXAtol	Retrieves the absolute concentration tolerance
getMSXRtol	Retrieves the relative concentration tolerance
getMSXComputedQualitySpecie	Retrieves the quality values for specific specie (e.g getMSXComputedQualitySpecie(['CL2']))
getMSXEquationsPipes	Retrieves the species dynamics in pipes
getMSXEquationsTanks	Retrieves the species dynamics in tanks
getMSXEquationsTerms	Retrieves the species dynamics in terms
setMSXAreaUnitsCM2	Sets area units to CM2
setMSXAreaUnitsFT2	Sets area units to FT2
setMSXAreaUnitsM2	Sets area units to M2
setMSXAtol	Sets the value of Atol
setMSXRtol	Sets the value of Rtol
setMSXCompilerGC	Sets compilet to GC
setMSXCompilerNONE	Sets compiler to None
setMSXCompilerVC	Sets compiler to VC
setMSXCouplingFULL	Sets coupling option to FULL
setMSXCouplingNONE	Sets coupling option to NONE
setMSXRateUnitsDAY	Sets rate units to DAY
setMSXRateUnitsHR	Sets rate units to HR
setMSXRateUnitsMIN	Sets rate units to MIN
setMSXRateUnitsSEC	Sets rate units to SEC
setMSXSolverEUL	Sets solver to EUL (standard Euler integrator)
setMSXSolverRK5	Sets solver to RK5 (Runge-Kutta 5th order integrator)
setMSXSolverROS2	Sets solver to ROS2 (2nd order Rosenbrock integrator)
setMSXTimeStep	Sets time step
setMSXPatternValue	Assigns a new value to the multiplier for a specific time period in a given MSX source time pattern
setMSXPattern	Sets all of the multiplier factors for a specific time pattern
setMSXParametersPipesValue	Assigns a value to a particular reaction parameter for given pipes
setMSXParametersTanksValue	Assigns a value to a particular reaction parameter for given tanks
setMSXConstantsValue	Assigns a new value to a specific reaction constant
useMSXHydraulicFile	Uses a previously saved EPANET hydraulics file as the source of hydraulic information

List of EPANET 2.2 Functions

Function	Description
ENepanet	Runs a complete EPANET simulation
ENaddcontrol	Adds a new simple control to a project
ENaddcurve	Adds a new data curve to a project
ENadddemand	Appends a new demand to a junction node demands list
ENaddlink	Adds a new link to a project
ENaddnode	Adds a new node to a project
ENaddpattern	Adds a new time pattern to a project
ENaddrule	Adds a new rule-based control to a project
ENclearreport	Clears the contents of a project's report file
ENclose	Closes a project and frees all of its memory
ENcloseH	Closes the hydraulic solver freeing all of its allocated memory
ENcloseQ	Closes the water quality solver, freeing all of its allocated memory
ENcopyreport	Copies the current contents of a project's report file to another file
ENcreateproject	Copies the current contents of a project's report file to another file
ENdeletecontrol	Deletes an existing simple control
ENdeletecurve	Deletes a data curve from a project
ENdeletedemand	Deletes a demand from a junction node
ENdeletelink	Deletes a link from the project
ENdeletenode	Deletes a node from a project
ENdeletepattern	Deletes a time pattern from a project
ENdeleteproject	Deletes an EPANET project
ENdeleterule	Deletes an existing rule-based control
ENgetaveragepatternvalue	Retrieves the average of all pattern factors in a time pattern
ENgetbasedemand	Gets the base demand for one of a node's demand categories
ENgetcomment	Sets a comment to a specific index
ENgetcontrol	Retrieves the comment of a specific index of a type object
ENgetcoord	Gets the (x,y) coordinates of a node
ENgetcount	Retrieves the number of objects of a given type in a project
ENgetcurve	Retrieves all of a curve's data
ENgetcurveid	Retrieves the ID name of a curve given its index
ENgetcurveindex	Retrieves the index of a curve given its ID name
ENgetcurvelen	Retrieves the number of points in a curve
ENgetcurvetype	Retrieves a curve's type
ENgetcurvevalue	Retrieves the value of a single data point for a curve
ENgetdemandindex	Retrieves the index of a node's named demand category
ENgetdemandmodel	Retrieves the type of demand model in use and its parameters
ENgetdemandname	Retrieves the name of a node's demand category
ENgetdemandpattern	Retrieves the index of a time pattern assigned to one of a node's demand categories
ENgetelseaction	Gets the properties of an ELSE action in a rule-based control
ENgeterror	Returns the text of an error message generated by an error code, as warning
ENgetflowunits	Retrieves a project's flow units
ENgetheadcurveindex	Retrieves the curve assigned to a pump's head curve
ENgetlinkid	Gets the ID name of a link given its index
ENgetlinkindex	Gets the index of a link given its ID name
ENgetlinknodes	Gets the indexes of a link's start- and end-nodes
ENgetlinktype	Retrieves a link's type
ENgetlinkvalue	Retrieves a property value for a link
ENgetnodeid	Gets the ID name of a node given its index
ENgetnodeindex	Gets the index of a node given its ID name
ENgetnodetype	Retrieves a node's type given its index
ENgetnodevalue	Retrieves a property value for a node
ENgetnumdemands	Retrieves the number of demand categories for a junction node
ENgetoption	Retrieves the value of an analysis option
ENgetpatternid	Retrieves the ID name of a time pattern given its index
ENgetpatternindex	Retrieves the index of a time pattern given its ID name
ENgetpatternlen	Retrieves the number of time periods in a time pattern
ENgetpatternvalue	Retrieves a time pattern's factor for a given time period
ENgetpremise	Gets the properties of a premise in a rule-based control
ENgetpumptype	Retrieves the type of head curve used by a pump
ENgetqualinfo	Gets information about the type of water quality analysis requested
ENgetqualtype	Retrieves the type of water quality analysis to be run
ENgetresultindex	Retrieves the order in which a node or link appears in an output file
ENgetrule	Retrieves summary information about a rule-based control
ENgetruleID	Gets the ID name of a rule-based control given its index
ENgetstatistic	Retrieves a particular simulation statistic
ENgetthenaction	Gets the properties of a THEN action in a rule-based control
ENgettimeparam	Retrieves the value of a time parameter
ENgettitle	Retrieves the title lines of the project
ENgetversion	Retrieves the toolkit API version number
ENgetvertex	Retrieves the coordinate's of a vertex point assigned to a link
ENgetvertexcount	Retrieves the number of internal vertex points assigned to a link
ENinit	Initializes an EPANET project
ENinitH	Initializes a network prior to running a hydraulic analysis
ENinitQ	Initializes a network prior to running a water quality analysis
ENnextH	Determines the length of time until the next hydraulic event occurs in an extended period simulation
ENnextQ	Advances a water quality simulation over the time until the next hydraulic event
ENopen	Opens an EPANET input file & reads in network data
ENopenH	Opens a project's hydraulic solver
ENopenQ	Opens a project's water quality solver
ENreport	Writes simulation results in a tabular format to a project's report file
ENresetreport	Resets a project's report options to their default values
ENrunH	Computes a hydraulic solution for the current point in time
ENrunQ	Makes hydraulic and water quality results at the start of the current time period available to a project's water quality solver
ENsaveH	Transfers a project's hydraulics results from its temporary hydraulics file to its binary output file, where results are only reported at uniform reporting intervals
ENsavehydfile	Saves a project's temporary hydraulics file to disk
ENsaveinpfile	Saves a project's data to an EPANET-formatted text file
ENsetbasedemand	Sets the base demand for one of a node's demand categories
ENsetcomment	Sets a comment to a specific index
ENsetcontrol	Sets the properties of an existing simple control
ENsetcoord	Sets the (x,y) coordinates of a node
ENsetcurve	Assigns a set of data points to a curve
ENsetcurveid	Changes the ID name of a data curve given its index
ENsetcurvevalue	Sets the value of a single data point for a curve
ENsetdemandmodel	Sets the Type of demand model to use and its parameters
ENsetdemandname	Assigns a name to a node's demand category
ENsetdemandpattern	Sets the index of a time pattern used for one of a node's demand categories
ENsetelseaction	Sets the properties of an ELSE action in a rule-based control
ENsetflowunits	Sets a project's flow units
ENsetheadcurveindex	Assigns a curve to a pump's head curve
ENsetjuncdata	Sets a group of properties for a junction node
ENsetlinkid	Changes the ID name of a link
ENsetlinknodes	Sets the indexes of a link's start- and end-nodes
ENsetlinktype	Changes a link's type
ENsetlinkvalue	Sets a property value for a link
ENsetnodeid	Changes the ID name of a node
ENsetnodevalue	Sets a property value for a node
ENsetoption	Sets the value for an anlysis option
ENsetpattern	Sets the pattern factors for a given time pattern
ENsetpatternid	Changes the ID name of a time pattern given its index
ENsetpatternvalue	Sets a time pattern's factor for a given time period
ENsetpipedata	Sets a group of properties for a pipe link
ENsetpremise	Sets the properties of a premise in a rule-based control
ENsetpremiseindex	Sets the index of an object in a premise of a rule-based control
ENsetpremisestatus	Sets the status being compared to in a premise of a rule-based control
ENsetpremisevalue	Sets the value in a premise of a rule-based control
ENsetqualtype	Sets the type of water quality analysis to run
ENsetreport	Processes a reporting format command
ENsetrulepriority	Sets the priority of a rule-based control
ENsetstatusreport	Sets the level of hydraulic status reporting
ENsettankdata	Sets a group of properties for a tank node
ENsetthenaction	Sets the properties of a THEN action in a rule-based control
ENsettimeparam	Sets the value of a time parameter
ENsettitle	Sets the title lines of the project
ENsetvertices	Assigns a set of internal vertex points to a link
ENsolveH	Runs a complete hydraulic simulation with results for all time periods written to a temporary hydraulics file
ENsolveQ	Runs a complete water quality simulation with results at uniform reporting intervals written to the project's binary output file
ENstepQ	Advances a water quality simulation by a single water quality time step
ENusehydfile	Uses a previously saved binary hydraulics file to supply a project's hydraulics
ENwriteline	Writes a line of text to a project's report file

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