# [R] changing cex pointwise in lattice

"José M. Blanco Moreno" jmblanco at ub.edu
Sat Jul 21 04:35:48 CEST 2012

```Sorry about that, when I asked before I meant that I had tried your
proposed syntax. That has a problem, and it is that it uses the same set
of values for the character expansion *for both groups*, and it is not
what I wanted to do. If you plot the data (now a reduced set! sorry!)
you'll see that both plots are exactly the same: I have data on the same
positions, but the values that I want to represent with cex are
different for each group. The intention is to take advantage of the fact
that (I think that) lattice will use the same scaling on both plots.

I think I have found it...
# This is just to make sure that a group has a value of 1 and the other of 2
dd\$z <- (1:50)%%2 + 1

xyplot(y~x|group, panel=function(x,y,subscripts){panel.xyplot(x,y,
cex=dd\$z[subscripts])}, data=dd)

Cheers,

José M. Blanco

El 20/07/2012 21:34, Peter Ehlers escribió:
> Sorry, I had meant to include the following line:
>
> Try: xyplot(y~x|group,cex=dd\$z,data=dd)
>
> Peter Ehlers
structure(list(y = c(3L, 3L, 3L, 3L, 9L, 9L, 9L, 9L, 38L, 38L,
38L, 38L, 44L, 44L, 44L, 44L, 38L, 38L, 38L, 38L, 44L, 44L, 44L,
44L, 38L, 38L, 38L, 38L, 44L, 44L, 44L, 44L, 54L, 54L, 54L, 54L,
60L, 60L, 60L, 60L, 54L, 54L, 54L, 54L, 60L, 60L, 60L, 60L, 54L,
54L), x = c(3.25, 3.25, 9.75, 9.75, 3.25, 3.25, 9.75, 9.75, 16.25,
16.25, 22.75, 22.75, 16.25, 16.25, 22.75, 22.75, 29.25, 29.25,
35.75, 35.75, 29.25, 29.25, 35.75, 35.75, 42.25, 42.25, 48.75,
48.75, 42.25, 42.25, 48.75, 48.75, 3.25, 3.25, 9.75, 9.75, 3.25,
3.25, 9.75, 9.75, 16.25, 16.25, 22.75, 22.75, 16.25, 16.25, 22.75,
22.75, 29.25, 29.25), group = structure(c(2L, 1L, 2L, 1L, 2L,
1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L,
1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L,
1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L), .Label = c("B",
"A"), class = "factor"), z = c(2, 0, 8, 3, 3, 4, 5, 4, 14, 11,
4, 2, 37, 7, 6, 5, 4, 3, 14, 5, 9, 3, 3, 1, 9, 4, 9, 7, 4, 2,
9, 1, 9, 2, 9, 1, 5, 2, 10, 1, 13, 5, 14, 4, 21, 6, 16, 3, 0,
1)), .Names = c("y", "x", "group", "z"), row.names = c(NA, 50L
), class = "data.frame")

--
---------------------------------------
José M. Blanco-Moreno
Dept. de Biologia Vegetal (Botànica)
Facultat de Biologia
Universitat de Barcelona
Av. Diagonal 643
08028 Barcelona
SPAIN
---------------------------------------
phone: (+34) 934 039 863
fax: (+34) 934 112 842
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