[R] changing cex pointwise in lattice

Peter Ehlers ehlers at ucalgary.ca
Sat Jul 21 15:50:09 CEST 2012

```I'm sorry I misunderstood your original request. You're right, use
subscripts for panel-specific argument values.

Peter Ehlers

On 2012-07-20 19:35, "José M. Blanco Moreno" wrote:
> 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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