> Our python group has an interest in the modification of a Python topographic engine (Mappa) to accept a custom built XML schema.
Mappa is used for Topic Maps (see <https://en.wikipedia.org/wiki/Topic_Maps
> 1. How do we modify the XML Schema found in Mappa to accept a custom built schema?
If you're interested in converting your topographical data into topic maps,
I'll recommend XSLT, see <https://github.com/heuer/tmxsl
> for examples to
convert non-topic map sources into topic maps.
Another option: Read your XML source and use the Mappas API to convert the data,
but I'd recommend XSLT.