Hi All,
Caveat: new user to both Python and Veusz
I'm looking at different ways to use Python to work around some plotting
limitations in a commercial software package I use, where I would like to write
out many 2D grid datasets and post-process them via a python script. To that
end, I constructed the python script below. When I run the script I don't get
any error messages, but I don't get a plot of the data either. What I end up
with is an empty plot window with axes going from 0 to 1. For reference, the
example provided in the documentation does run without any problems. Any
suggestions regarding what I'm doing wrong?
import veusembed as veusz
import numpy as np
def gauss(xVal,yVal):
hw = 2.5
hw2 = 2.5 * 2.5
r2 = xVal * xVal + yVal * yVal
return np.exp(-r2/(2 * hw2))
# axis ranges
x = np.linspace(-5,5,101)
y = x
# calc gaussian
dats=np.zeros((len(x),len(y)))
for ii in range(len(x)):
for jj in range(len(y)):
#print(ii,',',jj)
dats[ii,jj]=gauss(x[ii],y[jj])
# plotting
vfig = veusz.Embedded('Grid Plot')
vfig.Add('page',name='gbPage',autoadd=False)
vfig.To('gbPage')
vfig.Add('graph',name='gbGraph',autoadd=False)
vfig.To('gbGraph')
vfig.Add('axis',name='x',autoadd=False)
vfig.Add('axis',name='y',autoadd=False)
vfig.To('y')
vfig.Set('direction','vertical')
vfig.To('..')
vfig.Add('contour',name='gbContour',autoadd=False)
vfig.To('gbContour')
vfig.SetData2D('grid', dats, xrange=(-5,5), yrange=(-5,5))
vfig.Set('numLevels', 31)
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