[MATRIX-SIG] Much ado about nothingness.

[Jim Fulton]

David Ascher wrote:
> 
> On Wed, 9 Jul 1997, Jody Winston wrote:
> 
> > Here's a simple Missing class:
> > [...]
> 
> Note that a version of the Numeric and umath modules which know about
> Missing's is also needed, so that take(x,y) and log(x) do the right thing.

Right.  Basically, *anything* that deals with data at the C
level would have to check for missing data.

This is especially problematic when dealling with external 
libraries.

Jim

-- 
Jim Fulton         Digital Creations
jim@digicool.com   540.371.6909
## Python is my favorite language ##
##     http://www.python.org/     ##

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