[R] add=TRUE function not working

[Daniel Malter]

x1=rnorm(100)
x2=rnorm(100)
e=rnorm(100)
y=1.5*x1+x2+e

plot(y~x1,pch=1,xlim=c(min(x1,x2),max(x1,x2)))
points(y~x2,pch=16)

HTH
Daniel 


-------------------------
cuncta stricte discussurus
-------------------------

-----Ursprüngliche Nachricht-----
Von: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] Im
Auftrag von Mehdi Khan
Gesendet: Sunday, October 11, 2009 8:52 PM
An: r-help at r-project.org
Betreff: [R] add=TRUE function not working

Hey everybody, I have a matrix with three columns.

I want to plot two columns (independent variable) against one column (the
defendant). This is my code and the error associated with it:

plot(p, q, data=columns)

> plot(pprime,q, add=TRUE)
Warning messages:
1: In plot.window(...) : "add" is not a graphical parameter
2: In plot.xy(xy, type, ...) : "add" is not a graphical parameter
3: In axis(side = side, at = at, labels = labels, ...) :
  "add" is not a graphical parameter
4: In axis(side = side, at = at, labels = labels, ...) :
  "add" is not a graphical parameter
5: In box(...) : "add" is not a graphical parameter
6: In title(...) : "add" is not a graphical parameter

How do I resolve this problem?

thanks!

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