[R] Plotting question

[Duncan Murdoch]

On 11-08-01 5:44 AM, Andrew McCulloch wrote:
> Hi,
>
> I use R to draw my graphs. I have 100 points on a simple xy-plot. The points are
> distinguished by a third variable which is categorical with 10 levels. I have
> been plotting x against y and using gray scales to distinguish the level of the
> categorical variable for each point. It looks ok to me but a journal reviewer
> says this is not any use. I cannot afford to pay for colour prints. Any ideas on
> what is the best way to distinguish 10 groups on an xy scatter plot?

Plot digits or letters or other symbols.

Duncan Murdoch

>
>
>
> If all else fails I can just remove the graph and give them a table of
> regression coefficients.
>
>
> Thanks.
>
> Yours Sincerely
> Andrew McCulloch
>
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