Python example: editing HV results

This script works only with GeopsyPack>=3.6

Import SciFigs module and create a blank sheet

 import GeopsyPySciFigs as sf
 s=sf.newSheet()

Open the .page file saved from Geopsy H/V module

 s.fileOpen_2("hv-before-9.10.page")

Import a few Python functions to manipulate graphical objects.

 import hvedit

Change the color and the width of the average and stddev curves

 hvedit.setRed(s)

Save the average and stddev layers

 hvedit.saveLayers(s)

Open other results with the same stations, change the width of curves and compare the results

 s.fileNew()
 s.fileOpen_2("hv-after-9.10.page")
 hvedit.setWidth(s)
 hvedit.addLayer(s)

Python code

The legend retrieved from a LineLayer is just a local copy of the internal properties of the LineLayer. Modifying the obtained legend has no effect before calling setLegend. Childs and values of a legend are references through XML tags and attributes. To get a list of the available tags, untar a .legend file and inspect the file contents.xml.

 def setWidth(s):
   n=s.numberOfObjects()
   for i in range(0, n):
     g=s.object_1(i)
     print(g.objectName())
     # Average
     l=g.object(1).graphContents().layer(3)
     if l:
       leg=l.legend()
       pen=leg.child("LegendItem index='0'").child("Pen")
       pen.setValue("width", 0.3)
       l.setLegend(leg)
     # stddev
     l=g.object(1).graphContents().layer(4)
     if l:
       leg=l.legend()
       pen=leg.child("LegendItem index='0'").child("Pen")
       pen.setValue("width", 0.3)
       pen=leg.child("LegendItem index='1'").child("Pen")
       pen.setValue("width", 0.3)
       l.setLegend(leg)

 def setRed():
   n=s.numberOfObjects()
   for i in range(0, n):
     g=s.object_1(i)
     print(g.objectName())
     # Average
     l=g.object(1).graphContents().layer(3)
     if l:
       leg=l.legend()
       pen=leg.child("LegendItem index='0'").child("Pen")
       pen.setValue("color", '#FF0000')
       pen.setValue("width", 0.3)
       l.setLegend(leg)
     # stddev
     l=g.object(1).graphContents().layer(4)
     if l:
       leg=l.legend()
       pen=leg.child("LegendItem index='0'").child("Pen")
       pen.setValue("color", '#FF0000')
       pen.setValue("width", 0.3)
       pen=leg.child("LegendItem index='1'").child("Pen")
       pen.setValue("color", '#FF0000')
       pen.setValue("width", 0.3)
       l.setLegend(leg)

C++ supports overload of functions and operators. A function name may be defined several times with distinct argument number and types. Pyhton does not. To solve this issue, the Python interface renames the C++ functions appearing with the same name by adding a numbered suffix. To get the possible variants of function saveLayers:

 gc=s.object_1(0).object(1).graphContents()
 help(gc)

Version _3 accepts two arguments: the file name to save to and the name of the layer to save. Only one layer is saved unlike other variants that save all layers.

 def saveLayers(s):
   n=s.numberOfObjects()
   for i in range(0, n):
     g=s.object_1(i)
     print(g.objectName())
     gc=g.object(1).graphContents()
     if gc:
       gc.saveLayers_3(g.objectName()+"-average.layer", "Average")
       gc.saveLayers_3(g.objectName()+"-stddev.layer", "Stddev")

 def addLayer(s):
   n=s.numberOfObjects()
   for i in range(0, n):
     g=s.object_1(i)
     print(g.objectName())
     gc=g.object(1).graphContents()
     if gc:
       gc.insertLayers(g.objectName()+"-average.layer", "Stddev")
       gc.insertLayers(g.objectName()+"-stddev.layer", "Stddev")