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

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.

[jonas]

If you can define polygons for the different regions, then yes. You can probably find free shapefiles online.

Answer 1

[Image Analyst]

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);