I'm very new to GIS, so hope this is the correct place to ask. Not sure if this will even be possible.
This is what I want to achieve:
In short, I want to display a set of polygons, lines etc. in a browser, and then display an overlay which marks specific polygons and lines etc.
This is the way I think it should be approached:
- Take a SVG which represents a set of lines and polygons.
- Display this SVG using something like Leaflet in a browser, but without displaying a world map which seems to be the basis of Leaflet, OpenLayers etc.
- Overlay a GeoJSON layer on top of the SVG.
- If possible, I want the coordinates in the GeoJSON file to be relative to a reference point in the SVG.
Is this possible at all?
Also, is the last point possible, that is: specifying what the coordinates in the GeoJSON file should be relative to, or are they always interpreted as GIS coordinates?