On 12/21/11 12:31 AM, Brad Malone wrote:
Hi, I'm still working on my interpolating from an irregularly space
grid and then running pcolormesh on the resulting output. With some of
the newer data I've been plotting I've noticed that my plots are
complete garbage. I realized that this was actually because of the
output from griddata rather than some problem with
pcolormesh/pcolor/etc (basically I get huge negative values like
-80000 from the interpolation when all of my data points lie within
[0,20]) .
Googling I found out that the default griddata has some problems, and
that there is a better, more robust version available through natgrid.
I downloaded the natgrid-0.2.1 package from here
http://sourceforge.net/projects/matplotlib/files%2Fmatplotlib-toolkits%2Fnatgrid-0.2/.
My question now is, how do I install this and give it a shot? I'm
running on Ubuntu (or Xubuntu rather). The README doesn't seem to have
any directions.
Brad:
python setup.py install should do it. matplotlib will automatically use
it if it's installed.
-Jeff
Also, let's say that this new griddata doesn't work for me, is there
something else I could try? The interpolation problems are strange,
because I can break my data into 3 segments (I read 3 files to obtain
the data so this is the natural way to do it) and I can plot and
interpolate correctly any segment individually. It's only when I do
all 3 segments together that the interpolation begins to fail.
Any ideas?
Thanks for the continued help!
Brad
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