I would like to split a raster DTM of a river valley into several (maybe 30) equal sections. The raster currently follows the river channel and so is not a straight line but bends and moves like a river. Is there a way for me to split this raster into equal sections which can then be analysed individually? I tried the split and divide tools but these only work for polygons/lines. I am unsure how to divide the raster equally and/or into a specific number of sections. I almost want it to be in a grid-like format.
As if each colour was its own section that I can analyse individually.