Save draw features as GeoJSON

[giswqs]

Discussed in #168

^{Originally posted by egeres January 9, 2022}
It's possible to add makers, lines and polygonal areas directly in the notebook's ipywidget. Is it also possible to save these changes from that UI?

If not, in which attribute is it possible to access this information in a leafmap.Map object?

[giswqs]

This feature has been implemented.

• m.user_roi to retrieve the last draw feature
• m.user_rois to retrieve all draw features as a list
• m.save_draw_features(out_file) to save draw features as a GeoJSON file.