color effect on map (python plotly)

Question

I create a basemap for US and want to fill in color with temperature value.

I want to fill the map with the color effect like the following picture.

But now I could only hand code the color value like 'red','orange' and 'purple' and could not get the effect.

Any suggestion to help me to start the search? Thanks.

Answer 1

Looks at this example . On this step you can change colorscale parameter (and color changed on whole basemap).

I suggest you for first look at this forum answer and choose what colorscale you want the most (based on that page ). Such colorscale="Jet" .

Next, if that did not what you are looking for, then you can create a custom colorscale , specifying what color you want at each steps of colorscale.

Such this:

colorscale=[[0, 'rgb(166,206,227)'],[0.25, 'rgb(31,120,180)'],[0.45, 'rgb(178,223,138)']\
,[0.65, 'rgb(51,160,44)'],[0.85, 'rgb(251,154,153)'],[1, 'rgb(227,26,28)']]

But be warned! If you trying to update basemap example from plotly docs, check zmin and zmax . In example zmin=-5 and zmax=5 , so changed steps in custom colorscale if want custom colorscale:

colorscale=[[-5, 'rgb(166,206,227)'], [-3, 'rgb(31,120,180)'], [-1, 'rgb(178,223,138)']\
    , [1, 'rgb(51,160,44)'], [3, 'rgb(251,154,153)'], [5, 'rgb(227,26,28)']]