pcolor/m_pcolor cannot create world map correctly

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Hello all,
I have an issue to create world mean temperature map correctly with pcolor/m_pcolor. There are strips on the map created. Please see the first map.
h1 = pcolor(lon,lat,statTa(:,:,i)); set(h1,'edgecolor','none'); colorbar;
When I use imagesc, it shows pretty well. Please see the second map. But I think I prefer to use pcolor/m_pcolor to create map since they are more powerful on creating maps. Please help me on what happened when I was using pcolor here. Thank you very much!
h2 = imagesc(lon,lat,statTa(:,:,i)); set(gca,'ydir','normal'); colorbar;
  11 Comments
Mike Garrity
Mike Garrity on 9 Jun 2015
What version of MATLAB are you using? That looks like an issue that was fixed in R2014b. Is your version older than that, or newer?

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Accepted Answer

Chad Greene
Chad Greene on 9 Jun 2015
This question has been answered in the comments above, but in case anyone else runs into this problem again, here's an easier-to-find version of the solution. This is a rendering issue in Matlab versions pre-R2014b. Type
set(gcf,'renderer','opengl')
If that doesn't work, try
set(gcf,'renderer','painters')
and if that doesn't work, try
set(gcf,'renderer','zbuffer')
  1 Comment
Chad Greene
Chad Greene on 9 Jun 2015
Rong, if this solution worked for you, please click "Accept this answer" so it'll get top-posted.

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More Answers (1)

Chad Greene
Chad Greene on 8 Jun 2015
I see that when you use pcolor your axis values are not lat,lon values. Looks like linear indices of rows and columns. Are you sure you're plotting lat and lon?
  2 Comments
Rong Yu
Rong Yu on 8 Jun 2015
A good catch! I tried to plot lon,lat one and the one without lon, lat, but the figures have the same problem. Thank you so much for helping me with this!
Rong Yu
Rong Yu on 8 Jun 2015
Hi Chad,
You are so excellent at matlab coding! Do you mind sharing your tips and recommending some good matlab coding resources? Thank you :)))

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