How to get a color legend?

General Discussion Other

Amey Desai

in General Discussion • Other • 16 days ago

I have a time series plot in which I have 3 line charts one chart per entity. Each line has a different color. The colors being RGB. I would like to have a color legend in my frame which associates the color to the title of my entity. This might be very easy to do but this is my first processing program so any help is appreciated.

What I'm looking to do is get a rectangle and inside the rectangle have 3 rectangles which are filled with R, G, B respectively and text side-by-side.

Replies(1)

akiersky

Re: How to get a color legend?

16 days ago

Hi Amey,

Sounds like the built in rect() and text() method may work well for you. They will work something like this:

fill(255, 0, 0);//set the rect color to red
rect(10, 10, 10, 10);
fill(0);//set the text color to black
text("awesome text label", 25, 10);

That's the basic idea, check the examples for rect here:

http://processing.org/reference/rect_.html

and the examples for text here:

http://processing.org/reference/text_.html

You will need to use translate() to move the drawing origin, or change the x and y values of rect and text to place your keys where you want them, currently it will be at 10, 10 (10 pixels away from the top left corner).

hope this helps!

ps, in the future, posting code is helpful, then people can respond in context to you specific program.