pcolor/m_pcolor cannot create world map correctly

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Rong Yu
Rong Yu 2015-5-26
评论： Chad Greene 2015-6-9
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;
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显示 9更早的评论
Mike Garrity
Mike Garrity 2015-6-9
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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采纳的回答

Chad Greene
Chad Greene 2015-6-9
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 个评论
Chad Greene
Chad Greene 2015-6-9
Rong, if this solution worked for you, please click "Accept this answer" so it'll get top-posted.

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更多回答（1 个）

Chad Greene
Chad Greene 2015-6-8
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 个评论
Rong Yu
Rong Yu 2015-6-8
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 2015-6-8
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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