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The LOFAR Local Sky Model Tool

Reason this release was yanked:

Corrupt install

Project description

LSMTool allows the manipulation of LOFAR sky models (in the makesourcedb format).

Author: * David Rafferty

Based on contributed scripts by: * Björn Adebahr * Francesco de Gasperin * Reinout van Weeren

Contents: * __docs/__: documentation * __tests/__: contains test sky models and scripts useful for validation * __bin/__: contains lsmtool executable * __lsmtool/__: contains the main LSMTool scripts * __lsmtool/operations/__: contains the modules for operations * __parsets/__: some example parsets

The following operations are available: * SELECT: Select sources by source or patch properties * REMOVE: Remove sources by source or patch properties * TRANSFER: Transfer a patch scheme from one sky model to another * GROUP: Group sources into patches * UNGROUP: Remove patches * MOVE: Move a source or patch position * MERGE: Merge two or more patches into one * CONCATENATE: Concatenate two sky models * ADD: Add a source * SETPATCHPOSITIONS: Calculate and set patch positions * PLOT: Plot the sky model * COMPARE: Compare source fluxes and positions of two sky models

For details, please see the [full documentation](http://www.astron.nl/citt/lsmtool).

Installation

LSMTool is already installed on the LOFAR CEP3 cluster. Users on CEP3 should run the following commands before using LSMTool:

source ~rafferty/init_lsmtool

If you want to install LSMTool yourself, follow the instructions below.

### Dependencies

### Downloading and Installing

Get the latest developer version by cloning the git repository:

git clone https://github.com/darafferty/LSMTool.git

Then install with:

cd LSMTool python setup.py install

If you have a C++11-compliant compiler, you can build a faster version of the mean shift grouping algorithm with:

cd LSMTool python setup.py install –build_c_extentions

Note that the C++ version will give slightly different results compared to the Python version, but such differences are not expected to be important in practice.

### Testing

You can test that the installation worked with:

python setup.py test

If no errors occur, LSMTool is installed correctly.

Usage

The LSMTool executable can be used from the command line with a parset that defines the steps to be done. E.g.:

$ lsmtool model.sky lsmtool.parset

The parset follows the usual NDPPP/BBS format. E.g.:

# Select individual sources with Stokes I fluxes above 1 Jy LSMTool.Steps.select.Operation = SELECT LSMTool.Steps.select.FilterExpression = I > 1.0 Jy LSMTool.Steps.select.OutFile = out_model.sky

LSMTool can also be used in Python scripts by importing the lsmtool module. E.g.:

>>> import lsmtool
>>> skymod = lsmtool.load('model.sky')
>>> skymod.select('I > 1.0 Jy')
>>> skymod.write('out_model.sky')

For further details, please see the [full documentation](http://www.astron.nl/citt/lsmtool).

Project details


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