Using colormap with bokeh scatter

Question

In matplotlib the scatterplot offers the possibility of using the color of a plot to indicate value or magnitude like this plot:

For bokeh

Answer 1

Another option if you want to use a field name, is to use a LinearColorMapper:

from bokeh.models import LinearColorMapper

color_mapper = LinearColorMapper(palette='Magma256', low=min(radii), high=max(radii))

p.scatter(x,y,color={'field': 'radii', 'transform': color_mapper})