Mobile web map

Once an AOI has been created and split into multiple tasks, users need to visit a map view to choose an area to map.

For a prototype, a static Leaflet map may be sufficient. It should be mobile-friendly in terms of canvas and widget/element sizes; most field mappers are overwhelmingly likely to be accessing this via their phone.

Here are the example files for Mikocheni in Dar. It's four QR codes, corresponding to four GeoJSON files and their associated xlsforms. This GeoJSON file is the dumb grid that I used to split up the tasks.

Minimum Viable Prototype

• A static Leaflet map that allows a user to click and view/download a QR code, which they will then use to configure ODK Collect.

Bonus items

• User can see their own location on the map, which helps figure out what area to choose
• Ability to actually launch ODK Collect by clicking on the link (along the lines of "Open this link with ODK Collect")
• Areas turn grey/unclickable after being selected by someone (status becomes "checked out")
  • Obviously in a full product there would also be a way to "un-check out" an area (if you decided not to map it after all, or clicked the wrong one, or whatever), but that's not necessary for the demo on Friday September 9th

PostGIS is more powerful than pygdal (or at least simpler, but also more powerful in the sense that from PostGIS you can use gdal/ogr commands but not vice versa).

We have the database called fmtm with user fmtm, but now we need to get GeoJSON files into it, and manipulate them from Python.

Basemap configuration in ODK Collect

To work well with Select from File (select from map) questions showing OSM data, it's better to have MapBox as the basemap. Google (the default basemap) doesn't match the OSM features (so a building centroid won't be obviously associated with the basemap building polygon) and the OSM layer breaks something. MapBox works.

The QR Code configuration for ODK Collect appears to reset most parameters. For example, if you configure ODK Collect with a QR code for one form, and modify the settings to use MapBox as the basemap, this only persists until you configure ODK Collect with a new QR code, at which point Google slinks back as the basemap.

It would be great if we could either:

• Include a setting somewhere in the xlsform that sets the basemap
• Instruct people how to set MapBox as the basemap in a persistent fashion