[Numpy-discussion] question about histogram2d
Darren Dale
darren.dale@cornell....
Thu May 29 12:54:23 CDT 2008
I have a question about histogram2d. Say I do something like:
import numpy
from numpy import random
import pylab
x=random.rand(1000)-0.5
y=random.rand(1000)*10-5
xbins=numpy.linspace(-10,10,100)
ybins=numpy.linspace(-10,10,100)
h,x,y=numpy.histogram2d(x,y,bins=[xbins,ybins])
pylab.imshow(h,interpolation='nearest')
pylab.show()
The output is attached. I think I would have expected the transpose of what
numpy histogram2d returned, so the tight x distribution appears along the x
axis in the image. Maybe I am thinking about this incorrectly, or there is a
convention I am unfamiliar with. If the behavior is correct, could the
docstring include a comment explaining the orientation of the histogram
array?
Thanks,
Darren
--
Darren S. Dale, Ph.D.
Staff Scientist
Cornell High Energy Synchrotron Source
Cornell University
275 Wilson Lab
Rt. 366 & Pine Tree Road
Ithaca, NY 14853
darren.dale@cornell.edu
office: (607) 255-3819
fax: (607) 255-9001
http://www.chess.cornell.edu
-------------- next part --------------
A non-text attachment was scrubbed...
Name: hist2dimage.png
Type: image/png
Size: 4305 bytes
Desc: not available
Url : http://projects.scipy.org/pipermail/numpy-discussion/attachments/20080529/09368530/attachment.png
More information about the Numpy-discussion
mailing list