I have a shapefile with countries, which I convert to GeoJSON using
ogr2ogr and then converting that json to another TopoJSON, using
topojson command-line tool.
Everything works like charm, but now I want to learn to concatenate/merge/join/cluster (just don't know what is the most appropriate term in GIS context) different neighbor shapes to a bigger ones - say, all African countries to one big Africa shape. Let's assume that all Hdata needed (like continent name) is present in the original shapefile.
So, what is the simplest way to merge neighbour shapes while converting shapefile to topojson format?
Sorry if this question is about something trivial, it's just that this is a new topic to me, though I'm very glad I should deal with such issues.