Hi
Here are a couple of suggestions:
(i) To start a new page, use plot.new() FIRST, followed by
grid.newpage() (if you are trying to mix 'grid' and base graphics)
(ii) Watch out for 'grid' and base graphics fighting each other over the
clipping region (you might need to use grid.clip() after a call to
plot() or your 'grid' output may not appear - this is the problem in
your test2.pdf below).
For your simplified example, something like this should work ...
my.plot <- function() {
plot.new()
grid.newpage()
pushViewport(viewport(layout = grid.layout(nrow=1, ncol=2)))
pushViewport(viewport(layout.pos.row = 1, layout.pos.col = 2))
grid.rect(c(0.25, 0.75), width=c(0.5, 0.5), gp=gpar(fill=c("blue",
"red")))
popViewport()
pushViewport(viewport(layout.pos.row = 1, layout.pos.col = 1))
par(new=TRUE, fig=gridFIG())
plot(1:10)
popViewport()
popViewport()
}
my.plot(); my.plot()
Does that translate to your real situation ?
Paul
On 20/10/12 13:28, Ali Tofigh wrote:
On Wed, Oct 17, 2012 at 4:08 PM, ilai <ke...@math.montana.edu> wrote:
On Wed, Oct 17, 2012 at 11:10 AM, Ali Tofigh <alix.tof...@gmail.com> wrote:
my problem is that I usually have no choice but to mix grid and base
graphics.
What does that have to do with the answer you got ? did you even try it ?
here it is (again) but this time mixing base+grid:
The answer I got was that "base and grid graphics don't usually play
well together". I replied that I don't have a choice. So my reply has
everything to do with the answer I got. And yes, of course I tried. I
tried not using plot.new() and using grid.newpage() instead. Contrary
to what you think, that does not always work. Below is a minimal example that
you requested.
It seems that I have to use a mix of plot.new() and grid.newpage().
But if base graphics and grid don't play well together, is there
another option?
library(grid)
library(gridBase)
# plot a rectangle on the right side and a simple plot on the left.
my.plot <- function() {
pushViewport(viewport(layout = grid.layout(nrow=1, ncol=2)))
pushViewport(viewport(layout.pos.row = 1, layout.pos.col = 2))
grid.rect(c(0.25, 0.75), width=c(0.5, 0.5), gp=gpar(fill=c("blue", "red")))
popViewport()
pushViewport(viewport(layout.pos.row = 1, layout.pos.col = 1))
par(new=TRUE, fig=gridFIG())
plot(1:10)
popViewport()
popViewport()
}
## incorrect first plot
pdf("test1.pdf")
my.plot(); grid.newpage(); my.plot()
dev.off()
## incorrect second plot
pdf("test2.pdf")
plot.new(); my.plot(); plot.new(); my.plot()
dev.off()
## this works as intended with a mix of plot.new() and grid.newpage
pdf("test3.pdf")
plot.new(); my.plot(); grid.newpage(); my.plot()
dev.off()
/ali
require(gridBase)
pdf("test.pdf")
grid.rect(gp = gpar(fill="blue"))
grid.newpage()
grid.rect(gp=gpar(fill='blue'))
# mix in base+grid. adapted from ?gridPAR in gridBase
par(fig=gridFIG(), new=TRUE)
plot(1:10)
# plot.new() # uncomment to see it's unnecessary
plot(1:10)
pushViewport(viewport(width=0.5, height=0.5)) ;
grid.rect(gp=gpar(col="grey", lwd=2))
plot(rnorm(10))
grid.newpage()
grid.rect(gp=gpar(fill='blue'))
dev.off()
I use grid as much as possible, but for example for plotting
dendrograms, I don't know how to plot them other than using base
graphics. So I use the functions in gridBase to produce those plots.
Then you may have noticed the dendrogram examples in the gridBase docs don't
use plot.new() either but use lattice for the layout.
In order to do that I have to call plot.new() at some point in my code
to initialize the base graphics, and that can mess things up.
No. See example above or provide a minimal reproducible example that does
require it.
/ali
On Tue, Oct 9, 2012 at 4:00 PM, Greg Snow <538...@gmail.com> wrote:
The plot.new function is for base graphics and base and grid graphics
don't usually play well together. You probably want to use
grid.newpage function instead.
On Tue, Oct 9, 2012 at 1:26 PM, Ali Tofigh <alix.tof...@gmail.com>
wrote:
Hi,
when using the grid package, I've come across this weird behaviour
where a call to plot.new() will start a new page for a multi-page pdf,
but then the margins will somehow behave strangely for all but the
first page: here is some code:
pdf("test.pdf"); plot.new(); grid.rect(gp = gpar(fill="blue"));
plot.new(); grid.rect(gp = gpar(fill="blue")); dev.off()
The first page is filled completely with a blue rectangle, but in the
second page, the margins clip the rectangle. This is causing me
considerable headache, as I rely on many grid functions for plotting.
This seems like a bug to me, or is there something about the behaviour
of plot.new() and/or grid functions that I don't understand?
/Ali
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PLEASE do read the posting guide
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--
Gregory (Greg) L. Snow Ph.D.
538...@gmail.com
______________________________________________
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PLEASE do read the posting guide
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and provide commented, minimal, self-contained, reproducible code.
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private Bag 92019
Auckland
New Zealand
64 9 3737599 x85392
p...@stat.auckland.ac.nz
http://www.stat.auckland.ac.nz/~paul/
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
