kaijagahm
commented
3 years ago Added a pretty primitive version of this in https://github.com/kaijagahm/ygdpDashboard/commit/94d9ec13802d164af150bf195b53689a46c8e6a3.
I don't love this, though--I don't think it's a good way to display data. Problems:
- Colors get muddy because they go to black. I can't figure out a way to change this: the rgb() function takes a max argument but not a min argument. I can't figure out if there are any other "triangular" functions like rgb() that can take arbitrary colors.
- Red/green colorblind people won't be able to read this map. That's a huge flaw. And as mentioned above, I can't figure out a way to change the colors to something other than r/g/b.
- The legends in leaflet::addLegend() are created as svg objects, according to https://community.rstudio.com/t/increase-decrease-size-of-leaflet-legend/17037. Therefore, you can't really change the size. That's why there are three different legends in three different corners, which looks really awkward.
Going to bring these suggestions for tweaks into a different issue.
Jim would like to have an RGB view for the hexes in interpolation mode. This option would show up in the righthand menu only when three sentences are selected, not for any other number.
As of today, I already have the RGB option commented out in the code to generate the display settings menu. Haven't hooked it up to anything.
What I haven't figured out how to do is generate a color palette from this, because of how colors are generated in leaflet. We have a data frame in wide format, like:
Typically, in leaflet, you generate colors by creating a palette where you specify a range of colors (or several discrete colors, depending on the type of palette), and then specify a domain of values over which to map those colors. More info about color palettes in leaflet here.
I posted on RStudio community about this issue, so we'll see if someone there can help me resolve it.