[Qgis-developer] shaded relief plugin python error

[Giovanni Manghi]

Hi all,
I'm getting python error(s) when running the shaded relief plugin on the
following digital terrain model (qgis 1.4 on both linux and windows)

http://mapserver.uevora.pt/~mapserver/dem_portugal.tif.tar.gz

here are the errors

---------------------------
An error has occured while executing Python code:

Traceback (most recent call last):
  File
"/home/gio/.qgis//python/plugins/shadedrelief/ShadedReliefDialog.py",
line 82, in accept
    myEngine.run()
  File
"/home/gio/.qgis//python/plugins/shadedrelief/ShadedReliefEngine.py",
line 64, in run
    sta=numpy.dstack((-gr[1]*dy,gr[0]*dx,numpy.ones(gr[0].shape)*dx*dy))
  File "/usr/lib/python2.6/dist-packages/numpy/lib/shape_base.py", line
573, in dstack
    return _nx.concatenate(map(atleast_3d,tup),2)
MemoryError

Python version:
2.6.2 (release26-maint, Apr 19 2009, 02:11:59) 
[GCC 4.3.3]
---------------------------

An error has occured while executing Python code:

Traceback (most recent call last):
  File
"/home/gio/.qgis//python/plugins/shadedrelief/ShadedReliefDialog.py",
line 82, in accept
    myEngine.run()
  File
"/home/gio/.qgis//python/plugins/shadedrelief/ShadedReliefEngine.py",
line 57, in run
    gr =
numpy.gradient(numpy.array(rastergdal.layerAsArray(str(self.sourceFileParam)))*self.vzParam)
  File "/usr/lib/python2.6/dist-packages/numpy/lib/function_base.py",
line 1017, in gradient
    out[slice1] = (f[slice2] - f[slice3])/2.0
MemoryError
---------------------------


cheers

-- Giovanni --