[Matrix-SIG] N-D convolution and N-D order filtering with Numeric python

[Travis E. Oliphant]

This is to let interested people who use the Numeric Extension to 
python know about an update to my sigtools module to version 0.20 

In addition to the N-D convolution routine, the module now contains a
routine to perform N-D arbitrary order statistic filtering.  A median
filter is an example of an order statistic filter and can now be
implemented in a line of python code provided the data to be filtered is
in a Python Sequence Object.

It is available at 
http://oliphant.netpedia.net

--Travis