Cee wu chart

[hcorson-dosch-usgs]

Okay - I've got a basic single direction interaction working -- if you hover over one of the IWS basins, it populates the card and selects the corresponding bars in the barcode charts. Eventually I think it would be nice to highlight the selected basin on the map somehow.

Note: If the basins aren't filled, it seems like only the actual border of the basins triggers the mouseover. Therefore, in case we want to only color the borders, I'm using only a mouseover, rather than a mouseover and mouseout. If we leave the fill I've added, or we want to add more complexity to the interaction, we can switch to using a mouseout. Also, because I'm only using the mouseover, the card will remain populated with the last basin you selected until you hover over the next basin. This was the simplest setup -- figure we can finetune it later as needed.

Note: As of right now, the map svg elements for the IWS basins have ids like iws_delaware. Eventually it would be helpful to include the actual basin id(s) as the id or as classes, so that we can join to the data more easily. For now, I manually added a dictionary (basin_dict) that does that crosswalk for the 3 IWS basins.

Note: In digging deeper into the data, I realized that some IWS basins seem to be associated with >1 IWS 'basin_id', so that complicates populating the card, as we'd need to present some sort of average (area weighted or otherwise). For now, for simplicity's sake, I'm only indicating that there is a single basin_id associated with each basin in the basin_dict

I'll make issues for these last 2 things.

[hcorson-dosch-usgs]

Okay made a note of the basin id issue (both re: the svg and the >1:1 mapping) in USGS-VIZLAB#8. Realized as I was writing it out that if we end up adding all of the dataset basins (which I think would look really cool), and want to add interaction for all of those basins, then that would get us back to the 1:1 mapping, so would resolve the multiple ids issue. In that case I think we'd want to highlight the selected basin on the map clearly, so that it would be clear, for example, that you're only selecting 1 of the 2 IWS illinois river basin basins.