from numarray import * x = ones(22400,Float) print add.reduce(x) 22400.0 print add.reduce(x!=0) -128 print add.reduce((x!=0).astype(Int)) 22400
it seems like the boolean result of the expression ( middle try ) causes a problem? thanks, Stefan Kuzminski ____________________________________________________ Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs
On Fri, 2005-08-26 at 13:24, Stefan Kuzminski wrote:
from numarray import * x = ones(22400,Float) print add.reduce(x) 22400.0 print add.reduce(x!=0) -128 print add.reduce((x!=0).astype(Int)) 22400
it seems like the boolean result of the expression ( middle try ) causes a problem?
This issue has been discussed before and the general consensus was that this (somewhat treacherous) behavior should not change. For array totals (reducing on all axes at once), numarray has a sum() method which by default does do a type promotion to the "max type of kind", so integers -> Int64, floats -> Float64, and complexes -> Complex64 prior to the reduction. Regards, Todd
participants (2)
-
Stefan Kuzminski -
Todd Miller