2012/2/1 martin großhauser
Hello,
when I try in my script to divide a masked array by a scalar I get an error. The instruction is:
sppa = sp / 100.
sp is a masked array with ndim = 3.
error is: Traceback (most recent call last): File "/media/nethome/Work/workspace/interimEnso/src/mlBudget.py", line 95, in <module> sppa = sp / 100. File "/usr/lib/pymodules/python2.7/numpy/ma/core.py", line 3673, in __div__ return divide(self, other) File "/usr/lib/pymodules/python2.7/numpy/ma/core.py", line 1072, in __call__ m |= ma ValueError: invalid return array shape
The interesting thing is that this error only occurs after a tiling instruction:
sp4d = N.tile(sp, (ninterf, 1, 1, 1))
If I do the division before the tiling I don't get an error. There's also no error if I do the division with N.divide(sp, 100.).
Also printing the array sp after tiling doesn't work, while it works before. If I debug the script with eclipse/PyDev, in the variables window I get the message "Unable to get repr for
" for the sp array after tiling. The tiling operation shouldn't change the array, should it? Is this a bug, or is it expected behaviour?
Regards, Martin Groszhauser
I forgot to mention that I'm using Numpy 1.5.1 from Ubuntu 11.04 (1.5.1-1ubuntu2).