I have a 5km polygon grid of an area which is not a standard square/rectangle, it is in fact a rough ovoid made up of around 500 5km2 cells.
What I want to do, eventually, is have a 100m polygon grid covering the entire area that is currently represented by the ovoid(ish) 5km grid - about 1.25 million cells.
The caveat is that the 100m polygons should be linked to a 'parent' 1km grid square: i.e. you have 12,500 1km cells with a given ID (1KM_ID) and then the 100m cells are given an ID too (100M_ID) which goes from 1 to 100 for each 1km cell.
Using Create Fishnet will create 1km cells based on the bounding box of the 5km cell ovoid, which will greatly increase processing time, i just want the fishnet based on the cells that exist. Same applies for then creating 100m cells from the 1km cells.
This can be done really nicely in FME but for some reason there are processing issues and duplicates are created around the edge of each 1km cell, messing the whole thing up. Any ideas for AcrMap?