[R] modify rectangle color from image

From: Saurav Pathak <saurav_at_sas.upenn.edu>
Date: Wed 24 Jan 2007 - 21:37:20 GMT


I need some suggestion on how I could modify the color on some rectangle that I have created using "image".

In other words, I have a 5x5 matrix, say, m.

        m <- matrix(rnorm(25), nrow=5)

I create a grid of rectangles by:


Now I want to change the color of rectangle (3,3) to blue.

I don't know how this could be done, and searching the web has given me no hint.

Thanks for your help.


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Received on Thu Jan 25 15:33:04 2007

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