[R] setting color ranges

[hadley wickham]

Hi Sam,

You might find it easier to use ggplot2 to do this.  See
http://had.co.nz/ggplot2/geom_tile.html for some examples.

Hadley

On Thu, Feb 14, 2008 at 2:59 PM, samsr <sameet.sreenivasan at gmail.com> wrote:
>
>  Hi,
>
>   I need to plot a matrix using image() such that negative values are easily
>  distinguishable from posittive values, while also maintaining a gradation in
>  color with magnitude. How can I set ranges for colors in order to achieve
>  this. Thanks.
>
>  Sam
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