[R] scatter3D and colours

Jorge I Velez jorgeivanvelez at gmail.com
Thu Jul 14 20:48:50 CEST 2016


Thank you very much, Sarah, for your help.  The colvar argument was
certainly what I needed.  I will follow your suggestion.
Cheers,
Jorge.-



On Thu, Jul 14, 2016 at 1:29 PM, Sarah Goslee <sarah.goslee at gmail.com>
wrote:

> I assume you want some variant of:
> with(d0, scatter3D(X, Z, Y, bty = "b2", col = cols, colvar = c(1, 2, 3),
>            pch = 20, cex = 4, ticktype = "detailed", colkey = FALSE, phi =
> 20, theta = -140, zlim = c(-14, 14), xlim = c(-14, 14), ylim = c(-14, 14),
> xlab = "X", ylab = "Z", zlab = "Y", CI = CI2))
> mtext('Experiment 2', line = -0.5, side = 3, cex = 1.3)
>
> You should reread the help for scatter3D, paying close attention to
> col and colvar arguments. The default value of colvar is z, and that's
> what scatter3D() was using. Setting colvar to your chosen levels gives
> you the result you expect.
>
> Thanks for the complete reproducible example. I wouldn't have even
> looked at your problem without something to test.
>
> Sarah
>
> On Thu, Jul 14, 2016 at 1:55 PM, Jorge I Velez <jorgeivanvelez at gmail.com>
> wrote:
> > Dear R-help,
> >
> > I am using the plot3D package to produce 3D spheres along with 95% CIs
> > distinguishing each sphere with a predefined colour (see the reproducible
> > example at the end).
> >
> > I have been successful in producing a similar plot using a different data
> > set (kindly see
> > https://www.dropbox.com/s/snpgiqgqaiqgpiv/exp1combined.pdf?dl=0), but in
> > this case I cannot arrange the colours as desired. Specifically, the
> > colours obtaind do not correspond to those in the "cols" object below
> (kindly
> > see https://www.dropbox.com/s/nhljsuare84g811/test_exp2.pdf?dl=0).
> >
> > Any help/tips would be greatly appreciated.
> >
> > Thank you very much in advance.
> >
> > Best regards,
> > Jorge Velez.-
> >
> >
> > ## package needed
> > if(!require(plot3D)) install.packages("plot3D")
> > require(plot3D)
> >
> > ## data to be plotted
> > d0 <- structure(list(X = c(2.5, -2, 1), Z = c(-3.5, 4, -1), Y = c(8,
> > -8.5, -1)), .Names = c("X", "Z", "Y"), row.names = c("high",
> > "low", "medium"), class = "data.frame")
> > d0
> >
> > ## confidence intervals to be added
> > CI2 <- structure(list(z = structure(c(2, 3, 4, 2, 3, 4), .Dim = c(3L,
> > 2L), .Dimnames = list(c("high", "low", "medium"), c("97.5%",
> > "97.5%"))), y = structure(c(4, 5, 5, 4, 5, 5), .Dim = c(3L, 2L
> > ), .Dimnames = list(c("high", "low", "medium"), c("97.5%", "97.5%"
> > ))), x = structure(c(3, 7, 5, 3, 7, 5), .Dim = c(3L, 2L), .Dimnames =
> list(
> >     c("high", "low", "medium"), c("97.5%", "97.5%"))), alen = 0,
> >     lwd = 2), .Names = c("z", "y", "x", "alen", "lwd"))
> >
> > ## colours I would like to have
> > cols <- c("#0080ff", "#ff00ff", "darkgreen")
> >
> > # this produces the 3D plot, but the colours are not properly assigned
> > with(d0, scatter3D(X, Z, Y, bty = "b2", col = cols,
> >            pch = 20, cex = 4, ticktype = "detailed", colkey = FALSE, phi
> =
> > 20, theta = -140, zlim = c(-14, 14), xlim = c(-14, 14), ylim = c(-14,
> 14),
> > xlab = "X", ylab = "Z", zlab = "Y", CI = CI2))
> > mtext('Experiment 2', line = -0.5, side = 3, cex = 1.3)
> >
>

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