Thanks, David. The warnings occur after the true problem of trying to
plot the three graphs with different scales. I should have stopped
the example after assigning all_plots <- c(...), then plotted it (and
left out the update statements). If you do this, the x-axes do not
maintain their scales.
But I take your point that I should have paid more attention to the warnings!
Thanks,
Jeff
On Sat, Jul 20, 2013 at 11:50 AM, David Winsemius
<dwinsem...@comcast.net> wrote:
>
> On Jul 19, 2013, at 8:18 PM, Jeff Stevens wrote:
>
>> Hi,
>>
>> I would like to combine multiple xyplots into a single, multipanel
>> display. Using R 3.0.1 in Ubuntu, I have used c() from latticeExtra
>> to combine three plots, but the x-axis for two plots are on a log
>> scale and the other is on a normal scale. I also have included
>> equispace.log=FALSE to clean up the tick labels. However, when I try
>> all of these, the x-axis scale of the first panel is used for all
>> three. How do I keep different scales for the different panels?
>>
>> Here is an example:
>> library(lattice)
>> library(latticeExtra)
>> response <- c(76, 14, 15, 44, 26, 19, 74, 123, 49, 8, 56, 17, 18)
>> predictor1 <- c(107, 7, 25, 501, 64, 88, 344, 367, 379, 10, 66, 31, 32)
>> predictor2 <- c(10, 9, 8, 10, 29, 27, 55, 48, 2, 6, 14, 10, 5)
>> predictor3 <- c(67, 22, 66, 41, 72, 64, 69, 63, 64, 70, 60, 75, 78)
>>
>> pred1_plot <- xyplot(response ~ predictor1, scales = list(log = TRUE,
>> equispaced.log = FALSE),
>> panel = function(x, y, ...) {
>> panel.xyplot(x, y, type = c("p", "r"), cex = 2)
>> panel.text(x = log10(8), y = log10(120), labels = "(a)")
>> }
>> )
>>
>> pred2_plot <- xyplot(response ~ predictor2, scales = list(log = TRUE,
>> equispaced.log = FALSE),
>> panel = function(x, y, ...) {
>> panel.xyplot(x, y, type = c("p", "r"), cex = 2)
>> panel.text(x = log10(2), y = log10(120), labels = "(b)")
>> }
>> )
>>
>> pred3_plot <- xyplot(response ~ predictor3, scales = list(y = list(log
>> = TRUE, equispaced.log = FALSE)),
>> panel = function(x, y, ...) {
>> panel.xyplot(x, y, type = c("p", "r"), cex = 2)
>> panel.text(x = 22, y = log10(120), labels = "(c)")
>> }
>> )
>>
>> all_plots <- c(pred1_plot, pred2_plot, pred3_plot, layout = c(3, 1), x.same
>> = F)
>> update(all_plots, xlab=c("Predictor 1","Predictor 2", "Predictor 3"),
>> scales = list(y=list(log=T, equispaced.log=FALSE), x = c(list(log=T,
>> equispaced.log=FALSE), list(log=T, equispaced.log=FALSE),
>> list(log=F))))
>>
>> update(all_plots, xlab=c("Predictor 1","Predictor 2", "Predictor 3"),
>> scales = c(list(log = TRUE, equispaced.log = FALSE), list(log = TRUE,
>> equispaced.log = FALSE), list(y=list(log=T, equispaced.log = FALSE))))
>>
>> Any help is appreciated!
>
> I assume there was a notice o your console that there were warnings, right?
> You should offer the full texts of warnings and error messages. Here the full
> text of the first and second warnings:
>
>> warnings()[1:2]
> $`log scales cannot be changed via 'update'`
> update.trellis(all_plots, xlab = c("Predictor 1", "Predictor 2",
> "Predictor 3"), scales = c(list(log = TRUE, equispaced.log = FALSE),
> list(log = TRUE, equispaced.log = FALSE), list(y = list(log = T,
> equispaced.log = FALSE))))
> $`'x' is NULL so the result will be NULL`
> rep(scales[[nm]], length.out = 2)
>
> The first one is telling you why the results should be different than you
> expect. I'm not entirely sure what the second one is telling you, but it
> doesn't sound good.
>
> --
> David Winsemius
> Alameda, CA, USA
>
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