[R] [FORGED] Adding % sign to ticks in persp()

[Christofer Bogaso]

Awesome, thanks!

On Mon, Aug 6, 2018 at 2:54 AM Paul Murrell <paul using stat.auckland.ac.nz>
wrote:

> Hi
>
> Not in the persp() function itself, but the following code converts the
> persp() output to 'grid' output then modifies the labels to add
> percentage signs ...
>
> x <- seq(-10, 10, length= 30)
> y <- x
> f <- function(x, y) { r <- sqrt(x^2+y^2); 10 * sin(r)/r }
> z <- outer(x, y, f)
> z[is.na(z)] <- 1
> op <- par(bg = "white")
> persp(x, y, z, theta = 30, phi = 30, expand = 0.5, col = "lightblue",
>        ticktype = "detailed")
>
> library(gridGraphics)
> grid.echo()
> labelGrobs <- grid.grep("z-axis-labels", grep=TRUE, global=TRUE)
> addPercent <- function(x) {
>      lab <- grid.get(x)
>      grid.edit(x, label=paste0(lab$label, "%"), redraw=FALSE)
> }
> lapply(labelGrobs, addPercent)
> grid.refresh()
>
> ... is that what you meant?  The positioning of the labels relative to
> the tick marks is imperfect and could perhaps be improved by also
> editing the 'cex' for the labels, but hopefully this gets close enough
> to be useful.
>
> Paul
>
> On 06/08/18 01:04, Christofer Bogaso wrote:
> > Hi,
> >
> > Is there any way to add styles to the tick marks in persp() function?
> >
> > For eample I want to add '%' suffix to the z-axis tick marks.in below
> plot :
> >
> > x <- seq(-10, 10, length= 30)
> > y <- x
> > f <- function(x, y) { r <- sqrt(x^2+y^2); 10 * sin(r)/r }
> > z <- outer(x, y, f)
> > z[is.na(z)] <- 1
> > op <- par(bg = "white")
> > persp(x, y, z, theta = 30, phi = 30, expand = 0.5, col = "lightblue",
> > ticktype = "detailed")
> >
> >       [[alternative HTML version deleted]]
> >
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>
> --
> Dr Paul Murrell
> Department of Statistics
> The University of Auckland
> Private Bag 92019
> Auckland
> New Zealand
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> paul using stat.auckland.ac.nz
> http://www.stat.auckland.ac.nz/~paul/
>

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