Displaying 20 results from an estimated 10000 matches similar to: "jpeg device loop problem"
2007 Feb 08
1
Impossible to get jpeg or png output
Hi,
When I want to output a png file, I have the following error message :
Error dans X11(paste("jpeg::", quality, ":", filename, sep = ""), width, :
inpossible de d?marrer le p?riph?rique JPEG
De plus : Warning message:
impossible d'ouvrir le fichier JPEG 'Test.jpeg'
or in english
Error in X11(paste("jpeg::", quality, ":",
2008 Feb 21
2
jpeg in batch mode
Hello,
I am running some commands in batch on a server that I SSH into; some of
the commands call jpeg(). If I continue to stay signed on (with my
xwindows working on my machine) then the jpeg() command works (with a
single caveat, below). If I leave it and sign off (with a nohup command
in front of my BATCH) then jpeg gives me an error like this:
Error in X11(paste("jpeg::",
2006 Mar 24
1
unable to start device JPEG in linux
r-help??
When I want to use jpeg() in R-2.1.1 which is installed in linux platform to generate a jpeg file, the error occurs as following:
> jpeg()
Error in X11(paste("jpeg::", quality, ":", filename, sep = ""), width, :
unable to start device JPEG
In addition: Warning message:
unable to open connection to X11 display ''
> capabilities()
2005 May 31
1
jpeg function problem with rterm.exe
Hello,
I'm starting using R and runned a little script. The generated graphic could be exported correctly with RGui.exe ("file -> save as -> jpeg -> etc.")
But if I try to run the same script with Rterm.exe and followed by:
jpeg(file="test.jpeg", quality=90)
The created jpeg file is completely white without any color, do you know why ?
Sum up of the script:
2013 Jan 14
3
readJPEG function cannot open jpeg files
I installed jpeg package and tried to use
kim<-readJPEG("kim.jpeg") to read in a jpeg file, but R gave me an error:
Error in readJPEG("kim.jpeg") : unable to open kim.jpeg
I already put "kim.jpeg" in Rstudio's default working directory: "E:\home
work\Rstudio". So I don't think it's a problem caused by omitting the file's
path. But I
2001 Nov 05
1
jpeg device
Dear R colleagues,
Could someone please help me to have the jpeg/png device work ?
When I try the jpeg device, here's the error I get:
"jpeg(filename="test.jpg",width=480,height=480)
Error in X11(paste("jpeg::", quality, ":", filename, sep = ""), width, :
unable to start device JPEG
In addition: Warning message:
No jpeg support in this
2006 Nov 22
3
saving graphics in jpeg format
Dear R users,
I need to save a graph in jpeg format. After plotting the graph,
when the graphics window is active, in the File menu, the
Save as / Jpeg / 100% quality correctly saves the graph in jpeg format.
But I would like to know, how could I control the resolution (in dpi)
of the saved jpeg file? I need to produce a jpeg at 1200 dpi.
I have tried also the jpeg function in the package
2011 Apr 13
1
print to .jpeg
Evening folks,
I'm trying to print a series of graphs to .jpeg using a variable as the
title, but run into the difficultly that I can't find a way to append the
file extension to the .jpeg (in this case extensionless!) files.
Example:
----
species.name="CussoniaHolstii"
dia<-10:100
biomass = -21.4863 + 0.5797 * (dia ^ 2)
biomass
jpeg(species.name)
plot (biomass,
2010 Jan 23
1
Failure to produce italics in jpeg
Colleagues,
Using R 2.10.1 in OS X (Snow Leopard), I created JPEG documents that
were intended to include italicized text. In the JPEG versions, the
italics appear in bold-face. The identical code (except for the call
to the device) yields italics in PDF. A minimal example is:
PDF version:
> pdf("plot.pdf")
> plot(1,1)
> mtext(bquote(italic(P) < .(0.005)))
>
2001 Apr 04
1
To execute jpeg() under a remotely accessed Linux machine(via non-X-window emulation mode)
Dear R users:
When I tried to execute R(ver. 1.2.1)'s jpeg() command on a remotely
accessed (via the telnet line mode, NOT some X-window-emulated mode such as
tridiaVNC viewer for windows ) Linux machine,
platform: "i686-pc-linux-gnu"
arch : "i686"
os : "linux-gnu (RedHat ver.6.2)"
system : "i686, linux-gnu"
major : "1"
minor :
2008 Jun 26
2
density and jpeg
Dear R community, I am using densityplot (lattice package) for a large
dataset and wish to print it to a jpeg (the pdf is huge). R crashes
consistently. Am I doing it wrong or is densityplot incompatible with jpeg?
I work on a Mac, R 2.7.0.
> require(lattice)
> jpeg("test.jpeg")
> d[1:10]
[1] 0.700218 0.700175 0.700357 0.700847 0.698286 0.701520 0.698158 0.699300
0.698819
2007 Oct 02
1
Printing to jpeg (dev.print)
Hi,
This may be an easy question, but let me ask it. When writing a plot
to a jpeg file:
> plot(runif(30))
> dev.print(file="test.jpeg", device=jpeg, width=600)
the plot I receive has gray background, the result on no account I
want to receive. The same situation occurs when printing to a bmp
file. But when printing a pdf file, the background is white as it
should be. What
2008 Aug 19
1
jpeg, dev.off() inside function
Dear all,
I am trying to plot and save the plots. I have written a small function for
that in which I use the jpeg and dev.off() commands. Strangely, when these
commands are inside the function, they are not working anymore.
For instance:
dataframe<- data.frame (x=c(1:20),y=seq(0,9.5, length=20))
for (i in seq(0,15, length=4)){
setwd ("C:/R")
jpeg(filename =
2009 Sep 26
1
Rtools210 missing jpeg-7?
Hi,
I just built r49839 on my windoze machine with Rtools210. When I do
-make bitmapdll-, it errors saying file jpeg-7/jconfig.h not found
(apologies, I lost the exact error message). After downloading and
unpacking jpegsr7.zip, the bitmap dll builds fine. Rtools210 appears
to still install jpeg-6b, whereas the bitmap makefile (first line) is
expecting jpeg-7. Perhaps this is still experimental
2009 Aug 31
4
Simple column selection question- which and character lists
Dear R-list,
Seems simple but have tried multiple approaches, no luck.
I have a list of column names:
2004 Dec 20
3
Memory problem with jpeg() and wide jpegs
Hi
I have been creating very, very long jpeg images for the last two weeks
using jpeg(). All of a sudden, and I mean that, it's stopped working -
I've not changed a thing! The error message I get is:
> jpeg("out.jpg",width=50000,height=480, quality=100)
Error in devga(paste("jpeg:", quality, ":", filename, sep = ""), width,
:
unable
2006 Sep 06
2
JPEG struct mismatch on Intel Macs (PR#9209)
Full_Name: Phil Spector
Version: 2.3.1
OS: Mac OS X (Tiger)
Submission from: (NULL) (128.32.135.22)
Trying to close a jpeg() device on an Intel Mac causes the following:
> jpeg('out.jpg')
> plot(1:10)
> dev.off()
JPEG parameter struct mismatch: library thinks size is 372, caller expects 376
null device
1
>
An empty jpg file is produced in 'out.jpg'
2012 Jul 03
1
Problem using mtext to write onto a jpeg
Dear all,
I am trying to write figures directly to a file using the jpeg() function.
this_ylab=expression(paste("P",sep="")~lambda)
this_xlab=expression(rho)
jpeg("file_name.jpeg",width=100,height=100,units="mm",res=300)
plot(input_values,output_values,pch=16,cex=cex_pt,xlab="",frame.plot=T,ann=F,axes=F)
axis(side=2)
2008 Feb 19
1
Bug using X11 on mac osx (for jpeg or png creation) (PR#10800)
Full_Name: Stephane Bonneaud
Version: 2.6.2
OS: OSX - Leopard 10.5.2
Submission from: (NULL) (195.221.233.130)
Hello,
I have a R code file containing the following code:
-------
# This code is in r2jpg.r
# myData is filled here with some data from a file
jpeg(filename="test.jpg",width=960,height=720,pointsize=16,quality=100)
plot(myData,xlab="anything",
2012 Nov 27
1
Plot from a jpeg
Hi all,
I know that I can for instance draw to plots in one using
nf<-layout(matrix(c(1,2),1,2,byrow=FALSE))
Imagine I have 3 files:
plot1.jpeg
plot2.jpeg
plot3.jpeg
Anyone knows if I can read them and put on one colum and three rows reading
directly from the jpeg file?
Many Thanks
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