It is unclear what, precisely, you wish to do. Several things are "doable", some harder than others.
- Do you want an indicator that changes color as a function of time or space? By "time", I mean a Color Box that starts, say, as Red, then over some period of time changes to Orange, then Yellow, etc., while by "space" I mean a (static) indicator that has red at one end and purple (or some other color) at the other?
- Do you want the color to vary "discretely" or "continuously"? By "discrete", I mean "vary over N (maybe up to 100) different colors, without transitions", and "continuous" means a smooth gradation from starting color to ending color.
Varying over time is pretty straight-forward, so I'll assume you mean varying over space. Varying discretely is also pretty straightforward, so I'll assume you mean varying continuously. Now, that's tricky! The only way I can think to do this is by "pixel-painting" (my as-yet-not-copyrighted term for making an image one pixel at a time) -- you create a Picture or IMAQ Image of a certain size, having a certain number of pixels, then you do a "discrete" coloring of each pixel according to some algorithm you determine to pick your color.
Note that there are (at least) two ways to specify a color (in LabVIEW) -- RGB, where you specify the amount of Red, Green, and Blue (light) in each pixel, and HSL, where you specify the Hue (Color), Saturation, and Luminance. For doing a Color Bar, you might find HSL is a more "natural" scale, and there are utilities that can convert HSL to RGB that you can use.
Bob Schor
