StreamColorFunctionScaling

is an option for graphics functions that specifies whether arguments supplied to a stream color function should be scaled to lie between 0 and 1.

Details

The usual default setting is StreamColorFunctionScaling->True.
With StreamColorFunctionScaling->False original unscaled values are fed to the stream color function.
StreamColorFunctionScaling->{s₁,s₂,…} takes s_i to specify whether to scale argument i of the stream color function.
Scaling is done so as to make the minimum and maximum values of all variables lie between 0 and 1.

open allclose all

By default, scaled values are used to color the streamlines:

Only scale the last value in the color function:

Plot the streamlines with arrows colored according to the logarithm of the field magnitude:

Top