APSG - structural geology module for Python
Project description
APSG defines several new python classes to easily manage, analyze and visualize orientational structural geology data.
You can see APSG in action in accompanied Jupyter notebook http://nbviewer.jupyter.org/github/ondrolexa/apsg/blob/master/apsg_tutorial.ipynb
And for fun check how simply you can animate stereonets http://nbviewer.jupyter.org/github/ondrolexa/apsg/blob/master/animation_example.ipynb
Free software: MIT license
Documentation: https://apsg.readthedocs.org.
Changes
0.1 (01 Nov 2014)
First release of APSG
0.2 (09 Dec 2014)
new StereoNet class for Schmidt projection
Quick plot when data are passed to StereoNet class instantiation
mplstereonet dependency depreceated
new Pair and Fault classes to manipulate paired data (full support in future)
new uniform_lin and uniform_fol Group methods
abs for Group implemented to calculate euclidean norms
new Group method normalized
new Group properties and methods to calculate spherical statistics
0.2.1 (09 Dec 2014)
Quick plotting of groups fixed.
0.2.2 (17 Apr 2015)
FaultSet class added. Fault and Hoeppner methods of StereoNet implemented
VelGrad and DefGrad classes used for transformations added
G class to quickly create groups from strings added.
0.2.3 (21 Oct 2015)
New Docstrings format
StereoNet.getfols method bug fixed.
Shell scripts to run interactive session improved.
0.3 (09 Nov 2015)
Group fancy indexing implemented. Group could be indexed by sequences of indexes like list, tuple or array as well as sliced.
Cluster class with hierarchical clustering implemented
Group to_file and from_file methods implemented to store data in file
Group copy method for shallow copy implemented
StereoNet now accept Vec3 and Fault object as well for instant plotting.
Ortensor updated with new properties E1,E2,E3 and Vollmer(1989) indexes P,G,R and C. Bug in Woodcocks’s shape and strength values fixed.
uniform_lin and uniform_fol improved.
asvec3 method implemented for Fol and Lin
fol_plot property of StereoNet allows choose poles or great circles for immediate plotting
bootstrap method of Group provide generator of random resampling with replacements.
Group examples method provide few well-known datasets.
Matplotlib deprecation warnings are ignored by default
0.3.1 (20 Nov 2015)
SDB class improved. Support basic filtering including tags
StereoNet has close method to close figure and new method to re-initialize figure when closed in interactive mode
iapsg shell script added to invoke apsg ipython shell
0.3.2 (22 Feb 2016)
FabricPlot - triangular fabric plot added
.asvec3 property has .V alias
Resultant of Fol and Lin is calculated as vectorial in centered position
dv property of Fol added to return dip slip vector
0.3.3 (04 Jun 2016)
Added E1,E2,E3 properties and polar decomposition method to DefGrad object
StereoNet has vector method to mimics lower and upper hemisphere plotting of Lin and Vec3 objects as used in paleomagnetic plots
StereoNet could be initialized with subplots
rake method of Fol added to return vector defined by rake
Density could be initialized without data for user-defined calculations New method apply_func could be used to calculate density
Contour(f) methods accept Density object as argument
Added Group class methods to generate Spherical Fibonacci and Golden Section based uniform distributions of Vec3, Lin and Fol
0.3.4 (20 Jun 2016)
RTD fix
0.3.5 (12 Nov 2016)
Simple settings interface implemented in in apsg.core.seetings dictionary. To change: from apsg.core import settings setting[‘name’]=value
notation setting with values dd or rhr control how azimuth argument of Fol is represented.
vec2dd setting with values True or False control how Vec3 is represented.
Vec3 could be instantiated by one arument (vector like), 2 arguments (azimuth, inclination) or 3 arguments (azimuth, inclination, magnitude).
Group and FaultSet can return array or list of user-defined attributes of all elements
0.3.6 (03 Jan 2017)
shell script iapsg opens interactive console
0.3.7 (05 Jan 2017)
conda build for all platforms
numpy, matplotlib and other helpres imported by default
ortensor is normed by default
ortensor MADp, MADo, MAD and kind properties added
0.4 (04 Mar 2017)
Density class renamed to StereoGrid
Fault sense under rotation fixed
FaultSet example provided
Angelier-Mechler dihedra method implemented for FaultSet
StereoNet accepts StereoGrid and Ortensor as quick plot arguments
StereoNet instance has axtitle method to put text below stereonet
0.4.1-2 (04 Mar 2017)
bugfix
0.4.3 (25 Mar 2017)
Stress tensor with few basic methods implemented
StereoGrid keyword argument ‘weighted’ to control weighting
StereoNet kwargs are passed to underlying methods for immediate plots
StereoNet tensor method implemented (draw eigenlins or fols based on fol_plot settings)
Group totvar property and dot and proj methods implemented
Fol and Lin dot method returns absolute value of dot product
Vec3 H method implemented
StereoNet.contourf method draw contour lines as well by default. Option clines controls it.
centered bug fixed
StereoNet allows simple animations. Add animate=True kwarg to plotting method and finally call StereoNet animate method.
0.4.4 (25 Mar 2017)
Group method centered improved
Group method halfspace added to reorient all vectors towards resultant halfspace
0.5.0 (19 Nov 2017)
bux fix minor release
0.5.1 (05 Dec 2017)
Kent distribution sampling added
Automatic kernel density estimate for contouring
UserWarnings fix
0.5.2 (10 Oct 2018)
Fischer distribution sampling added
transform method has norm kwarg to normalize tranformed vectors
axisangle property to calculate axis and angle from rotation matrix
StereoNet arc method added
Vec3 and Group upper and flip properties implemented
DefGrad, VelGrad and Stress rotate method accepts also rotation matrix
velgrad method added to DefGrad to calculate matrix logarithm
StereoGrid has new methods max, min, max_at, min_at
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