R help - Jul 2011 - Assigning colors to cells

Hi everyone,

I was wondering if there was a simple way to assign a color to a cell 
based on value in a data frame and return the cell as an image? For 
example, if the value is >1, then blue, if between 1 and 2, green, if 
between 2 and 3, yellow, etc.

I tried using a heatmap function but I was hoping there was an easier 
way to do this.

Thanks,
Sumukh

Use the cut() function to produce the interval categories and color
names in the data frame and then pass that variable to the col argument in the
appropriate plot function. Something like

mydata$mycolors <- cut(mydata$value, c(-Inf, 1, 2, 3, Inf), label
c('blue', 'green', 'yellow'))

Ask an abstract question, get an abstract answer...

HTH,
Dennis

On Tue, Jul 19, 2011 at 2:30 PM, Sumukh Sathnur
<sumukh.sathnur at gmail.com> wrote:
> Hi everyone,
>
> I was wondering if there was a simple way to assign a color to a cell based
> on value in a data frame and return the cell as an image? For example, if
> the value is >1, then blue, if between 1 and 2, green, if between 2 and
3,
> yellow, etc.
>
> I tried using a heatmap function but I was hoping there was an easier way
to
> do this.
>
> Thanks,
> Sumukh
>
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