Re: [Matplotlib-users] problem with basemap & my data arrays, gap around plot edge

Jeff,
I've attached a test script and my data file.
Unfortunately, the method that Im using to create the data set isn't very
portable (the data is being imported from an external program), so sending
my .npz file is the best I can do.

The gaps are about 5 pixels, and create an offset from where the contours
end to where the basemap hits the edge of the plot.

Please let me know if there's something in my data set that could be causing
this, or if its an issue with basemap.

Thanks,
P.Romero 

-----Original Message-----
From: Jeff Whitaker [mailto:js...@fa...] 
Sent: 2009-04-06 6:13 AM
To: P.Romero
Cc: mat...@li...
Subject: Re: [Matplotlib-users] problem with basemap & my data arrays, gap
around plot edge

P.Romero wrote:
>
> Hi,
>
> Im having a problem with contourf & basemap;
>
> theres a fairly wide gap showing up around the top&left edges of my plot.
>
> Im trying to do the following:
>
> Import numpy as np
>
> Z=my_data( .)
>
> m=basemap( . )
>
> X,Y=m(*np.meshgrid(Z.lon,Z.lat))
>
> Znp=Z.filled
>
> cs=m.contourf(X,Y,Znp)
>
> using this method, Im experiencing a strange gap around the left&top 
> edges of the plot.
>
> It seems as if the contour data is not aligning correctly with the 
> basemap, or is somehow 'falling short' of filling in the entire area.
>
> Ive used this same method to plot other contour plots and have never 
> experienced this type of gap (using the same version of 
> basemap/matplotlib/numpy/etc.).
>
> Im not sure if there's something wrong with the way Im creating my 
> data, or if this is a problem with basemap.
>
> In either case, can someone please provide me with some help figuring 
> out why that gap is appearing?
>
> Ive attached an npz file with my 3 arrays: X,Y,Znp.
>
> Ive also attached a png image of my output, where the gap is clearly 
> evident around the left&top edges.
>
> Thanks,
>
> P.Romero
>

Pablo: Please include a working example that creates your example plot.

-Jeff