RE: [Matplotlib-users] numerix bug and bugfix

[Perry G. <pe...@st...>]

Eric Firing wrote:

> Update on pcolor_demo2.py: strange things are going on, but now, using 
> profile.py, I get 2.72 seconds with Numeric and 9.49 seconds with 
> numarray.  I don't have any explanation for why it was taking 80 seconds 
> with numarray when I tried it earlier today.  It is still much slower 
> than with Numeric, though, which seems odd.
> 
Numarray will be slower on "smaller" operations, in particular
if one is manipulating many small arrays, or looping over many
indiviual array element accesses. I haven't profiled it but
I'm guessing the difference lies in the list comprehension that
calculates the vertices which is doing many array indexings.

Perry Greenfield