[R] two plots in one frame

David A Richmond richmond at saintmarys.edu
Fri Nov 16 03:24:27 CET 2001

On Thu, 15 Nov 2001, Justin Fay wrote:

> I would like to plot two different scatterplots in the same frame (say with 
> different colors) but everytime plot is called a new frame is created.  Is 
> there a way around this?

if, say, you want to plot 2 sets of y's against the same x, the


makes sure that all the data from y2 are displayed in the plot. If you
don't specify the 'ylim=...' option, you won't get all the data in if some
values of y2 are outside the range of y1. pch=17 tells it to use a
different symbol (the default symbol is a circle, and pch=17 is a


|David Richmond                It works on a          |      
+ Dept. of Sociology          complex scientific      + 
|Saint Mary's College          principle, known as    |  
+ Notre Dame, IN 46556               "pot luck."      +
|219-284-4517                    - The Doctor         |

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