Scatterplot with data grouped by color
See argument 'col' to plot()/points(). Setup a 'col' vector of length equal to the number of data points and have the 'C' variable specify the colors of the individual elements. Then call plot()/points() with argument 'col'. My $.02 /HB
On Fri, Sep 12, 2008 at 3:29 PM, Amanda Young <amandag at mit.edu> wrote:
Hi,
I am a complete R rookie so this question is probably really simple
but I haven't found an answer on the web that I can understand.
My data frame has 3 columns, A, B and C. A and B have numbers (about
8000 rows), C is a factor which is either true or false. So I can
plot A vs B with plot(dataframe$A, dataframe$B). However, I would
like the points to be different colors depending on whether C is True
or False. Even better, if C had more than 2 groups, like group 1,2,3
can I make all 3 different colors, etc? It would be really helpful to
give an example using my scenario since I have a lot of trouble
understanding other examples on the web because the data is not set
up like my data.
Thanks so much!!!
Amanda
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