From: Sundar Dorai-Raj <sundar.dorai-raj_at_pdf.com>

Date: Sun 31 Jul 2005 - 20:19:08 EST

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*> Quoting Deepayan Sarkar <deepayan.sarkar@gmail.com>:
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R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sun Jul 31 20:24:39 2005

Date: Sun 31 Jul 2005 - 20:19:08 EST

Hi, Mike,

Mike Lawrence wrote:

> Hi Deepayan,

*>
**> Thanks for the reply, but when I enter the " type = "b" " code into the
**> auto.key
**> (see below) command I get the following message:
**>
**> Error in valid.pch(x$pch) : zero-length 'pch'
**>
**> Any suggestions?
**>
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Why not just ignore auto.key and use key? Personally, I use auto.key only when I want the defaults. If I want something more customized, then I use key. As in,

library(lattice)

set.seed(1)

z <- expand.grid(x=1:10, g = LETTERS[1:5])
z$y <- rnorm(nrow(z))

trellis.par.set(theme = col.whitebg())

par.line <- trellis.par.get("superpose.line")
par.symb <- trellis.par.get("superpose.symbol")
n <- seq(nlevels(z$g))

my.key <- list(space = "right",

border = TRUE, cex.title = 1.2, title = "My Key", size = 7, lines = list(pch = par.symb$pch[n], lty = par.line$lty[n], col = par.line$col[n], type = "b"), text = list(levels(z$g))) xyplot(y ~ x, z, groups = g, pch = par.symb$pch[n], type = "b", key = my.key)

> xyplot(> #basic settings> bias ~ sample_size | measure,> data = bias,> groups = exp_tau,> type = "b",> pch = c(1,2,3,4,5),

> xlab = "Sample Size",

> ylab = "Bias (ms)",> #make strips transparent> strip = function(bg, ...) strip.default(bg = 'transparent', ...),> # tweak scales> scales=list(> x=list(> at = c(20, 40, 60),> tck = c(1,0),> alternating = F> ),> y=list(> at = c(-50, -25, 0, 25, 50),> tck = c(1,0),> alternating = F> )> ),> # tell key to match symbols to those used in the plot> par.settings = list(> superpose.symbol = list(> cex = .8,> pch = c(1,2,3,4,5)> )> ),> # key settings> auto.key = list (> type = "b",> lines = T,> border = T,> cex.title = 1.2,> title = "Expected Tau",> text = c("30 ms", "80 ms", "130 ms", "180 ms", "230 ms"),> space = "right"> )

>>On 7/30/05, Mike Lawrence <Mike.Lawrence@dal.ca> wrote: >> >>>Quick correction: >>> >>>The lines "lines = T," & "type = "b"" in the "par.settings" section should >>>not >>>be there. They are remnants of my previous (failed) attempts at solving the >>>problem. Below is the correct code: >>> >>>xyplot( >>> #basic settings >>> bias ~ sample_size | measure, >>> data = bias, >>> groups = exp_tau, >>> type = "b", >>> pch = c(1,2,3,4,5), >>> #make strips transparent >>> strip = function(bg, ...) strip.default(bg = 'transparent', ...), >>> # tweak scales >>> scales=list( >>> x=list( >>> at = c(20, 40, 60), >>> tck = c(1,0), >>> alternating = F >>> ), >>> y=list( >>> at = c(-50, -25, 0, 25, 50), >>> tck = c(1,0), >>> alternating = F >>> ) >>> ), >>> # tell key to match symbols to those used in the plot >>> par.settings = list( >>> superpose.symbol = list( >>> cex = .8, >>> pch = c(1,2,3,4,5) >>> ) >>> ), >>> # key settings >>> auto.key = list ( >>> lines = T, >>> size = 7, >> >>You seem to be missing a 'type="b"' somewhere here. The type="b" >>argument to xyplot is actually handled by the panel function. The key >>has type="l" by default (see under 'key' in ?xyplot) and has to be >>changed explicitly. >> >> >>> border = T, >>> cex.title = 1.2, >>> title = "Expected Tau", >>> text = c("30 ms", "80 ms", "130 ms", "180 ms", "230 ms"), >>> space = "right", >>> ) >>>) >>> >>> >>> >>>Quoting Mike Lawrence <Mike.Lawrence@dal.ca>: >>> >>> >>>>Hi all, >>>> >>>>I'm having a problem with the auto.key function in xyplot. I hate to >>>>bother the >>>>list like this and I'm positive I must be missing something very simple, >>> >>>yet >>> >>>>I've spent the last day searching for a solution to no avail. >>>> >>>>Essentially, I want a key that contains entries in which the plot points >>> >>>are >>> >>>>superimposed on a line of the same color as the points, like this: >>> >>>o--o--o >>> >>>>Now, given the presence of the default "divide" command, I assume this is >>>>simple; indeed, I get the impression that this representation is >>>>supposed to be >>>>produced automatically. Yet I can't seem to get it to work! >>>> >>>>Now, I've incorporated various other tweaks to my xyplot function, so I'm >>>>wondering if these tweaks are somehow hindering my efforts. The function >>> >>>is >>> >>>>pasted below; I am making a 3x3 plot, each panel contains 5 lines and it >>> >>>is >>> >>>>these lines that I want represented in the key. See the comments for >>>>descriptions of the modifications. >>>> >>>>Any help would be greatly appreciated. >>>> >>>>Cheers, >>>> >>>>Mike >>>> >>>> >>>>xyplot( >>>> #basic settings >>>> bias ~ sample_size | measure, >>>> data = bias, >>>> groups = exp_tau, >>>> type = "b", >>>> pch = c(1,2,3,4,5), >>>> #make strips transparent >>>> strip = function(bg, ...) strip.default(bg = 'transparent', ...), >>>> # tweak scales >>>> scales=list( >>>> x=list( >>>> at = c(20, 40, 60), >>>> tck = c(1,0), >>>> alternating = F >>>> ), >>>> y=list( >>>> at = c(-50, -25, 0, 25, 50), >>>> tck = c(1,0), >>>> alternating = F >>>> ) >>>> ), >>>> # tell key to match symbols to those used in the plot >>>> par.settings = list( >>>> superpose.symbol = list( >>>> cex = .8, >>>> pch = c(1,2,3,4,5) >>>> ), >>>> lines = T, >>>> type = "b" >>>> ), >>>> # key settings >>>> auto.key = list ( >>>> lines = T, >>>> size = 7, >>>> border = T, >>>> cex.title = 1.2, >>>> title = "Expected Tau", >>>> text = c("30 ms", "80 ms", "130 ms", "180 ms", "230 ms"), >>>> space = "right", >>>> ) >>>>) >>>> >>>> >>>> >>>>-- >>>> >>>>Mike Lawrence, BA(Hons) >>>>Research Assistant to Dr. Gail Eskes >>>>Dalhousie University & QEII Health Sciences Centre (Psychiatry) >>>> >>>>Mike.Lawrence@Dal.Ca >>>> >>>>"The road to Wisdom? Well, it's plain and simple to express: >>>>Err and err and err again, but less and less and less." >>>>- Piet Hein >>>> >>>>______________________________________________ >>>>R-help@stat.math.ethz.ch mailing list >>>>https://stat.ethz.ch/mailman/listinfo/r-help >>>>PLEASE do read the posting guide! >>> >>>http://www.R-project.org/posting-guide.html >>> >>> >>> >>>-- >>> >>>Mike Lawrence, BA(Hons) >>>Research Assistant to Dr. Gail Eskes >>>Dalhousie University & QEII Health Sciences Centre (Psychiatry) >>> >>>Mike.Lawrence@Dal.Ca >>> >>>"The road to Wisdom? Well, it's plain and simple to express: >>>Err and err and err again, but less and less and less." >>>- Piet Hein >>> >>>______________________________________________ >>>R-help@stat.math.ethz.ch mailing list >>>https://stat.ethz.ch/mailman/listinfo/r-help >>>PLEASE do read the posting guide! >>>http://www.R-project.org/posting-guide.html >>> >>

>

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sun Jul 31 20:24:39 2005

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