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Question: How to plot a vector field so that small vectors have one colour, and large vectors have another colour. Intermediate vectors must have either shades of both colours or some gradient of colours.

Question:How to plot a vector field so that small vectors have one colour, and large vectors have another colour. Intermediate vectors must have either shades of both colours or some gradient of colours.

130 Maple 2019
November 30 2020
3

Hi,

I have managed to create the following plot.  It won't plot on the site's plotter:

fieldplot([1, y^2 + x], x = -10 .. 10, y = -6 .. 6, fieldstrength = fixed, color = abs(y^2 + x + 1))

I am trying to assign a colour gradient to the different vectors based on vector magnitude.  In the color option, I entered color= expresssion for the magnitude of the vectors

 

This only half worked.  It currently scales the colours such that the largest and smallest vectors are the same colour.  How do I assign a gradient such that the small magnitude vectors are one colour, and they then transition to another colour as their magnitude gets larger?

 

 
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