[R] How do I change the colour and format for the trelli plot ?

[Deepayan Sarkar]

On Thu, Nov 19, 2009 at 6:03 AM, ychu066 <ychu066 at aucklanduni.ac.nz> wrote:
>
> http://old.nabble.com/file/p26418382/hist1.png hist1.png  i want three plots
> along on the side , how to i do that ?
>
>  and I also want to change the colour of the bars for each plot, how do i do
> that ?
>
> i got the code here to draw that ..

This code did not produce the plot you have linked to. The answer to
your question depends on how you created the plot, so you have to tell
us that. Changing the color in all panels is easy:

histogram(rnorm(100), col = "goldenrod")

Different colors in different panels is a little more work:

histogram(~rnorm(100) | gl(3, 1, 100),
          mycolors = sample(colors(), 3),
          panel = function(..., col, mycolors) {
              panel.histogram(..., col = mycolors[panel.number()])
          })

-Deepayan

> columns <- 8:153
> plots <- vector("list", length(columns))
> j <- 0
> for (i in columns)
> {
>  plots[[ j <- j+1 ]] <-
>    histogram( ~ data[,i],
>      ylab = "Frequency", xlab = "Score",
>      xlim = c(1,5), ylim = c(0,100),
>      main = colnames(data)[i]
>    )
> }
>
> print(plots[[1]])
>
> # or export
>
> for (i in seq_along(plots))
> {
>  png(paste("hist", i, ".png", sep = ""))
>  print(plots[[i]])
>  dev.off()
> }
> --
> View this message in context: http://old.nabble.com/How-do-I-change-the-colour-and-format-for-the-trelli-plot---tp26418382p26418382.html
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>
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