Thank you for the suggestion, but I couldn't see a difference with "antialiased" either True or False. The lines between contour levels remain.
I tried a different colormap (spectral) but it had the same effect. I tried more color levels (256) but the effect got worse.

I can't find any example pictures online of matplotlib's contourf() producing a "smooth" plot, I know matlab's does it:
http://www.mbari.org/bog/Projects/CentralCal/summary/images/m1_nuts_ts_contour.jpg


-Ryan

On Wed, Nov 11, 2009 at 5:08 PM, Eric Firing <efiring@hawaii.edu> wrote:
Ryan Neve wrote:
Hello,
In my filled contour plot: http://imgur.com/vXoCL.png
There are faint lines between the contour levels. I think they are yellow since they disappear in the yellow parts of the graph and are most obvious in the red areas. Is there any way to get rid of these lines? The number of contour levels is arbitrary, and I don't need them emphasized with a moire pattern.

Try experimenting with the "antialiased" kwarg in your call to contourf. It is a boolean; see if a value of True or False gives a better result.

Eric


Thank you,

-Ryan


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