Is it possible : Change color on database field

[Stephen Woodbridge]

Use a and EXPRESSION ([SPEED] < 0.5) or whatever you want to consider as
stopped in your CLASS and color it stopped, Follow this with a CLASS
with no EXPRESSION to be the default case and color it moving.

-Steve

Stéphane RIFF wrote:
> What i want to do is :
>  I represent gps track on a map, this work fine with one class and one
> color.
> I want mapserver to change the symbol color each time ths vehicles stop
> and start again
> in the database it's a field that match speed. So each time the speed
> field is equal to zero
> i want to change the color.
> I don't know how to do that , is it possible ??? How ???
>
> Hope i'm understandable
> Thanks
>