Change the value based on the graphic scale

[dominic]

Hello everyone, I would like to know in grads the way to change color to a displayed value, in this case the temperature, useful for example when the value corresponds to dark colors, where unfortunately the black is not very clear.

https://postimg.cc/image/bu12okkpn/

I would like to give this setting to the plot, with white values ​​exceeding a certain threshold in the scale.

Did someone do it? thank you so much

[meteoadriatic]

You need to use maskout function. First, set color, then draw all numeric values that are under certain limit using first maskout function. After that, set different color and draw all numeric values that are over same limit, using second maskout function.

http://cola.gmu.edu/grads/gadoc/gradfuncmaskout.html