investigate url parameter support

[tcnichol]

We would like to use traitvis-webapp as the visualization for search results from the advanced search interface. In order for this to work, the shiny app needs to support url parameters for season, trait, etc.

[Chris-Schnaufer]

Direction is to go from traitvis-webapp to search

[dlebauer]

we have decided is that we will provide links / urls to the advanced search app from traitvis rather than vice-versa. Both ways would be nice but on a call it sounded like it will be much easier to provide urls to traitvis users to get to search rather than configure traitvis to have endpoints that can get from the search interface to the traitvis.

[dlebauer]

see #36 for implementing the reverse action

[dlebauer]

@kimberlyh66 please review https://www.r-bloggers.com/official-release-of-shiny-router-and-its-new-features/amp/ and comment on whether it will be possible to parameterize the traitvis webapp to open to either a map or a timeseries plot for a particular season, experiment, and variable

[kimberlyh66]

Would allowing users open to a map like this be something you are looking for?

The url could be something like:
https://traitvis.workbench.terraref.org/?exp=MAC+Season+6&subexp=Sorghum+BAP&var=Canopy+Height+(cm)&cultivar=None&date=2018-05-22#!/map

[dlebauer]

Looks promising! Can the map and plot tabs be combined?

[kimberlyh66]

The plot can be displayed below the map.