Every now and again, I am asked to make maps. It’s not my strongest suit, but it sometimes comes with the territory. My latest task, as mentioned in my previous post, involves building support for MBTiles databases into a mobile situational awareness tool. This is done so that the devices can have a persistent local basemap in the field. The need arose to ensure that the basemaps were high contrast to assist with visibility in bright sunlight. Something like this:
One of the requirements was to have topographic-map-like contours to indicate changes in elevation. Existing map services didn’t provide what we needed so it was necessary to build a custom map, which meant generating contour lines. It had been years since I had last done that with Esri tools, but I didn’t have any extension licenses available, so I turned to QGIS to get the job done this time.