I have a number of vector layers with all types of geometry (point, line/multiline, poly) and I want to combine them into a single layer in QGIS. I know MapInfo can do it but with the other 99% of my workflow in QGIS it's the last step to having a complete pipeline.
It seems there are a number of tools to merge shapefiles together (assuming equivalent geometry types) in QGIS but this doesn't help me. There's ogr2ogr but running the following statement gives me a failure:
ogr2ogr -f "MapInfo File" merge.tab points.tab ogr2ogr -update -append merge.tab lines.tab -f "MapInfo File" FAILURE: Unable to open existing output datasource 'merge.tab'
It'd be fine if I wanted to merge a bunch of layers with the same geometry (use SHP, merge, save result as TAB), but multiple geometry types are eluding me.
I could write a little program using Tatuk Developer Kernel but I'm not that happy with its handling of projections (using EPSG:28355 it seems to create a projection that is 'custom' when viewed in QGIS or MapInfo).