Re: [Matplotlib-users] Plotting incomplete data sets

[Pierre GM <pgm...@gm...>]

On Wednesday 29 August 2007 10:02:14 John Morgan wrote:
> I have some data, which I'd like to plot using matplotlib. Some of the data
> has been flagged by some other software, and I have a boolean array, the
> same shape as my original data which tells me which data has been flagged
> .... 
> I'm sure I can get this approach to work but I thought I'd ask if there's
> there a more elegant way to achieve the same aim.

two words: masked arrays.

>>>import numpy
>>>flagged = numpy.ma(initial_array, mask=boolean_array)
>>>plot(flagged)

That will take care of the unmasked data.
For the masked values, just revert the mask.