Rework overview plot to only show available tracts.

[dharhas]

We need to rework overview plot to only show available tracts.

• [ ] Rework data placed in partitioned data directory to support the the overview plot
• [ ] Only show polygons for available data
• [ ] plot should show up after data folder selected

@timothydmorton I assume we still want the ability to select a subset of tracts.

@brendancol, @philippjfr is there a way to disable the skyplot and detail view until a selection is made on this tab?

[timothydmorton]

Yes, we will need ability to select subset of tracts.

I'm not sure what you mean above by "only show available metrics." The metrics being displayed on the overview plot are a completely different set of quantities from what we call "metrics" later (which are just raw table columns).

Regarding the first point here, let's continue to use the single overview dataset that we have, as there is not yet a mechanism to produce that generically from the LSST pipeline. Probably just having a load_overview_data() function that can be updated by us in the future to accommodate a new repo-specific dataset of the same format should be fine. This can still for now be loaded upon selection of a data directory, even if it stays a generic thing for now.

[timothydmorton]

The other point to add here is to make sure that the load-data action that happens upon tract selection doesn't happen until the tract selection is finished (e.g., not ever tap action should trigger a new load). Also, add the option box-select on the polygons, if that isn't already done.

This might involve a "finalize tract selection" button or something to that effect.

[dharhas]

@timothydmorton meant to say 'tracts' not 'metrics'