Please see newly uploaded workbook on Tableau Public: Tableau Public
Here's what I did to get there:
Created Map Parameters
Calculation to change orientation display to where Deaths, Injuries, Homes Destroyed or Eruptions occurred by Lat/Lon:
Calculation to change color upon parameter change (then each color was independently changed under COLOR marks card):
Finally, a Viz-in-ToolTips to show summary of all related datum by Lat/Lon:
Hope that works out for ya! Don
Hello again Don ,
Thanks a lot for your help!
I want to use create a viz whereby you can tell how many people died, or how many eruptions there have been by looking at the colour. The problem with this though is that the range of numbers is pretty extreme considering the distribution of numbers.
For example, the maximum death toll is almost 30,000 for volcanoes, but most volcanoes won't have a death toll of more than a couple hundred. This means that the colour distribution is very one-sided; you tend to see a lot of one colour but very little of another.
What's more is that, if you want to get a good colour distribution, you need to centre the colour scheme under the "advanced" settings at different values. But on Tableau, if you were to go into the "advanced" settings and set the centred valued at say 500 for death toll on a "diverging" colour pallette, it would then centre the colour scheme at 500 for everything (number of eruptions, number of houses destroyed, etc).
I don't know how to centre the colour scheme of different parameter choices at different values. This is the problem.
This'll be my last post until Monday But I believe I got you closer to your goal.
Please check out the most recent upload I just made to Tableau Public. What you gain in this update is that the measures are dynamically coloring based on the range of color and range of values (I used temperature diverging 5-steps but feel free to pick another color) ; however, what you lose in this is that each category (Deaths, Injuries, etc.) will now be that particular color range.
They cannot have their own individual colors and ranges; I've already been down that road with using individual color legends per measure and they work well with tables of data, but not on a map, nor have I seen anyone else get to that on a map!
The parameter control works the same as before. This was done by dragging the Parameter Control to Colors on the Marks Card. Cool trick!
Please see below example - have fun! Thx, Don
Thanks for filling me in this limitation and helping me work my way around it.
I've decided to not use a parameter for maps as I can't adjust the colour scheme according to the different maps.
Thanks a lot for you help again Don!