[R] Lattice in a loop does not produce output
I cannot understand why xyplot does not work within a simple for loop.
This works up to the for loop; inside the for loop the png files are
opened and closed, but nothing is plotted. No error messages are written
to the console either. This is the case on both Windows and Linux.
By the way, running the script below on Linux using source() does not
even produce the first xyplot. This is less of an issue for me though.
#! usr/bin/env R
# Test lattice loop
rm(list=ls())
x-1:16
y-2*x-1
z-rep(c('A','B','C','D'),4)
xyz-data.frame(x=x,y=y,z=z)
require(lattice)
png('Test.png')
xyplot(y~x|z)
dev.off()
for (i in 1:5) {
f-paste('Test',i,'.png',sep='')
png(f)
xyplot(y~x|z)
dev.off()
}
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Re: [R] Lattice in a loop does not produce output
Check the FAQs. You need an explicit 'print' on the lattice call:
for (i in 1:5) {
f-paste('Test',i,'.png',sep='')
png(f)
print(xyplot(y~x|z))
dev.off()
}
On Tue, Aug 18, 2009 at 8:13 AM, Alex van der Spekam...@xs4all.nl wrote:
I cannot understand why xyplot does not work within a simple for loop.
This works up to the for loop; inside the for loop the png files are
opened and closed, but nothing is plotted. No error messages are written
to the console either. This is the case on both Windows and Linux.
By the way, running the script below on Linux using source() does not
even produce the first xyplot. This is less of an issue for me though.
#! usr/bin/env R
# Test lattice loop
rm(list=ls())
x-1:16
y-2*x-1
z-rep(c('A','B','C','D'),4)
xyz-data.frame(x=x,y=y,z=z)
require(lattice)
png('Test.png')
xyplot(y~x|z)
dev.off()
for (i in 1:5) {
f-paste('Test',i,'.png',sep='')
png(f)
xyplot(y~x|z)
dev.off()
}
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
Jim Holtman
Cincinnati, OH
+1 513 646 9390
What is the problem that you are trying to solve?
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Lattice in a loop does not produce output
Lattice objects must be assigned and deliberately printed:
png(test.png)
p - xyplot(y~x|z)
plot(p)
dev.off()
Should fix both problems. Bryan
*
Bryan Hanson
Professor of Chemistry Biochemistry
DePauw University, Greencastle IN USA
On 8/18/09 8:13 AM, Alex van der Spek am...@xs4all.nl wrote:
I cannot understand why xyplot does not work within a simple for loop.
This works up to the for loop; inside the for loop the png files are
opened and closed, but nothing is plotted. No error messages are written
to the console either. This is the case on both Windows and Linux.
By the way, running the script below on Linux using source() does not
even produce the first xyplot. This is less of an issue for me though.
#! usr/bin/env R
# Test lattice loop
rm(list=ls())
x-1:16
y-2*x-1
z-rep(c('A','B','C','D'),4)
xyz-data.frame(x=x,y=y,z=z)
require(lattice)
png('Test.png')
xyplot(y~x|z)
dev.off()
for (i in 1:5) {
f-paste('Test',i,'.png',sep='')
png(f)
xyplot(y~x|z)
dev.off()
}
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Lattice in a loop does not produce output
Try printing the plot created.
print(xyplot(...))
--
Dr. Mark Wardle
Specialist registrar, Neurology
(Sent from my mobile)
On 18 Aug 2009, at 13:13, Alex van der Spek am...@xs4all.nl wrote:
I cannot understand why xyplot does not work within a simple for loop.
This works up to the for loop; inside the for loop the png files are
opened and closed, but nothing is plotted. No error messages are
written
to the console either. This is the case on both Windows and Linux.
By the way, running the script below on Linux using source() does not
even produce the first xyplot. This is less of an issue for me though.
#! usr/bin/env R
# Test lattice loop
rm(list=ls())
x-1:16
y-2*x-1
z-rep(c('A','B','C','D'),4)
xyz-data.frame(x=x,y=y,z=z)
require(lattice)
png('Test.png')
xyplot(y~x|z)
dev.off()
for (i in 1:5) {
f-paste('Test',i,'.png',sep='')
png(f)
xyplot(y~x|z)
dev.off()
}
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
