selection-stats

This GIMP script will find the perimeter of the current selection in pixels and its area as a percentage of total image area.

For example, suppose you have a map and want to find the area of a particular region. If each pixel is X kilometers across, and the image is W * H pixels, then the total image area is X * X * W * H square kilometers. So if you select a region and find that it's, say, 42% of the total area, then that region's area is X * X * W * H * 0.42 square kilometers.

Installation and usage: Extract the .scm file from the .zip and copy it into your GIMP scripts directory. The menu item will be located at <Image>/Select/Area and perimeter.

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selection-stats 0.2.0