Re: [Matplotlib-users] plot with nans

[Jeff W. <js...@fa...>]

Andrew Straw wrote:

> Hi Alan,
>
> It seems MaskedArrays are the preferred way to do this.  See the 
> masked_demo.py example.
>
> And while I'm at it, does anyone if there is simple function call 
> which returns only the unmasked values of a masked array (without 
> filling the masked values in, but simply returning a shorter 
> sequence)?  What is it?  I have my own, but it's not pretty:

Andrew:

If x is a masked array, x.compressed() returns the unmasked contented in 
a ravelled (i.e. rank-1) array.  For example:

 >>> x = ma.array(arange(5), mask = [0,0,1,0,0])
 >>> print x.compressed()
[0,1,3,4,]

-Jeff

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