Trouble with reproducing same colorbar for different figures

Question

Jaime de la Mota 2017-2-25

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/326851-trouble-with-reproducing-same-colorbar-for-different-figures

回答： Image Analyst 2017-2-25

I have designed a program for plotting the standar deviation value of a certain variable measured on different stations on each month of the year, but when I plot it, each map has it's own scale and I want all of them with the same numbers for easy distinction between months. This is the program:

auxiliar=nanstd(data,0,3);
for j=1:12
     figure(j)
     ax = worldmap('angola');
     load coastlines
     setm(ax, 'Origin', [0 20 0])
     plotm(coastlat,coastlon);
     hold on
    m=max(auxiliar(:,j));
    mn=min(auxiliar(:,j));
      for a=1:190
      c=(auxiliar(:,j)-mn)/(m-mn);
      color2=[c c c];
          lat=coord(a,1);
          lon=coord(a,2);
          geoshow(ax, lat, lon, 'DisplayType', 'point', 'MarkerEdgeColor', color2(a,:),'Marker', '.', 'MarkerSize', 20)
      end
         colormap([sort(c),sort(c),sort(c)])
         caxis([mn m])
         colorbar
  end

Can someone please tell me how can I put the same colorbar for the twelve months of the year?

Thanks for reading.

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Answer 1

Image Analyst 2017-2-25

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/326851-trouble-with-reproducing-same-colorbar-for-different-figures#answer_256290

You need to compute the OVERALL mn and m, which means you need to finish that loop first, and then loop over all colorbars calling caxis() in a second loop, because obviously you don't know what the overall min and max are until you've finished the first loop.