In QGIS, how can I create a shapefile with polygons of a known size (ie. rectangle 30m x 40m) placed on a grid with 1km spacing? That is, polygons in place of points on a 1km grid.
I have an issue where I have feature classes of groups of zip codes in different sectors of the US that I have created. I want to be able to define the outer boundary of these groups so I can create a ...
QGIS has "polygon to line" but this isn't exact reverse engineering of "line to polygon". I want no overlapped border closed lines, just segmented (on each intersected point) lines. Additionally I ...
I hope I can make my question I posted yesterday clearer... sorry! Basically, I want to obtain the opposite of this: How to convert fake donut holes in polygons to real ones? Such polygons will ...
I'm using OGR to perform a union using UnionCascaded. All my polygons have been created by GDAL polygonize which ensures that all polygons follow pixel edges and should therefore align nicely. But I ...