Thanks Sarah and Didier.
Didier, I made what you said: it's ok. But I'm sure there is way to set the 256 colors of the ramp. A array must be created as input in a property node of intensity chart with the property "color table".
If you have an other idea...
Hello
First of all, sorry for my english because I'm french.
I would change color code in a "intensity chart". I still know I have to use a property node with color table but not how
Friends of labview, thanks very much