[Numpy-discussion] Crosstabulation

Zachary Pincus zachary.pincus at yale.edu
Wed Jul 14 14:42:49 EDT 2010


Hi Ionut,

Check out the "tabular" package:
http://parsemydata.com/tabular/index.html

It seems to be basically what you want... it does "pivot tables" (aka  
crosstabulation), it's built on top of numpy, and has simple data IO  
tools.

Also check out this discussion on "pivot tables" from the numpy list a  
while ago:
http://mail.scipy.org/pipermail/numpy-discussion/2007-August/028739.html

One question -- what do you mean by "raster data"? In my arena, that  
usually means "images"... and I'm not sure what a crosstabulation on  
image data would mean!

Zach


On Jul 14, 2010, at 2:28 PM, Ionut Sandric wrote:

>
> Sorry, the first email was sent before to finish it...
>
>
> Hi:
>
> I have two raster data and I would like to do a crosstabulation  
> between them and export the results to a table in a text file. Is it  
> possible to do it with NumPy? Does someone have an example?
>
> Thank you,
>
> Ionut
>
>
>
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