Divide the currently active layer into subsections of specified width&height (pxs). New layers containing subsections are appended to the active image's layer list. The new layers are labeled "(<x>,<y>)" in the new co-ordinate system.
Please see the readme included in the attached file for installation instructions.
The new co-ordinate system begins (0,0) in the top-left hand corner and moves left-to-right, top-to-bottom.
<x> represents row
<y> represents column
From the same 'meetthegimp' thread as the previous poster, patdavid, but my version is sufficiently different to merit a post of its own, I think.
Should work in Linux and Windows and have a few more options so had to rework the dialog to barely fit on my Windows portable!
This Python plug-in helps in the comparison of the left part of an image to the right part (equilibrium or not). It can be applied to any type of image and computes the centroid of the gray image pixels. The centroid is similar to the centre of mass concept, where mass is replace by another quantity; here it is the lightness and the greyness of the pixel.