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RMS714
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How to create a worldmap with color gradient ?

RMS714
さんによって質問されました 2017 年 6 月 2 日
最新アクティビティ Shruti Shivaramakrishnan さんによって 回答されました 2017 年 6 月 12 日
Hello all,
I use the function borders, and i try to create a worldmap but i can only put basic color on the map. I would like have a color gradient that evolve with a value associated to the country.
This is my code :
for i = 1 : length(unique(SF3.data(:,3)));
for p = 1 : 204;
borders(SF3.meta_info{5, 1}{1+p,1},'facecolor',COLOR{SF4(p,3)});
end;
end;
SF3.meta_info{5, 1}{1+p,1} : this is my country name COLOR{SF4(p,3)} : color associated to the country.
Perhaps that a function named ' colorbar' may help me but i don't know how to use it in this case.
Thank you for your answers

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回答者: Shruti Shivaramakrishnan 2017 年 6 月 12 日

Hello Thomas, 
I believe that the "contourcmap" function might be helpful in this case: https://www.mathworks.com/help/map/ref/contourcmap.html#bukujsg
Also, if you are looking at individual patches, the "patchesm" function might be helpful: https://www.mathworks.com/help/map/ref/patchesm.html
Furthermore, if you would like to work with worldmaps, the "geoshow" function could be useful: https://www.mathworks.com/help/map/ref/geoshow.html
The above documentation links contain examples regarding how to create a worldmap with different color settings and includes using different types of options as well depending on the use case. 
I have also found a file-exchange submission that may help: https://www.mathworks.com/matlabcentral/fileexchange/28943-color-palette-tables---cpt--for-matlab
Please note that file-exchange submissions would be considered third-party submissions.

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