How could I add colors to regions in a global map?

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Robert
Robert 2018-10-21
回答： Image Analyst 2018-10-21
Hi,
Wondering if is an easy and quick way to add colors to regions in a global map (matrix)?
Like this...(attached figure).
I would like to make a "mask map" with different numbers for the regions (colors) (e.g. South Pacific = 1, North Pacific = 2, etc) and then extract from a global map (matrix) the values for South Pacific = 1, North Pacific =2, etc.
In this case, the global map is a matrix with ocean temperature data.
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jonas
jonas 2018-10-21
编辑：jonas 2018-10-21
If you can define polygons for the different regions, then yes. You can probably find free shapefiles online.

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采纳的回答

Image Analyst
Image Analyst 2018-10-21
If you have an image where each region is separated by solid black lines, you can identify each region with bwlabel(), then use label2rgb() to make a colored image
labeledImage = bwlabel(binaryImage);
rgbImage = label2rgb(labeledImage, yourColorMap);

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