[R] Writing text in lattice graphics
ltorgo at liacc.up.pt
Tue Apr 23 18:05:04 CEST 2002
I'm trying to obtain a set of regression lines obtained for different values
of a factor using lattice. I would like to add a string to each panel showing
the R^2 value of the respective line, but I'm having difficulties positioning
the text (namely on which coordinates to give to the "ltext" function).
Here is what I'm using (I've used ?? for the things I would like you to be so
kind to help me on how to fill in).
> xyplot(O2 ~ Am | Site, data = mydata, scales=list(x='free'),
ltext(??, ??, round(summary(lm(y ~ x))$r.squared,3))
I would like the R^2 values to appear in the top left corner of each of the
panels I get.
I've tried fixed values for the "x", "y" parameters of "ltext", but as I'm
using different X scales for each panel things get messy...
I'm using R 1.4.1 on a Windows 2000 machine.
Thank you in advance.
FEP/LIACC, University of Porto Phone : (+351) 22 607 88 30
Machine Learning Group Fax : (+351) 22 600 36 54
R. Campo Alegre, 823 email : ltorgo at liacc.up.pt
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