Error Png Unable Start Device
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Unable To Start Jpeg() Device R
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No Png Support In This Version Of R
community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Unable to open png device in loop up vote 6 down vote favorite I've been fiddling around with a function in R, where, long story short, I have a for-loop, and at each shiny server unable to start device png step, I save a plot using png, then immediately readPNG so that I can extract RGB information. I then make a second plot, then readPNG this so I can compare the RGB of the two images. The problem is that I keep getting an error message about being unable to start the png() device, or to open the file for writing, after a number of loops (can be as few as a handful of loops, or as many as a few thousand). Here is really simplified code, but it has the bare essentials, and generates the error message: testfun<-function(beg,fini) { library(png) setwd("D://mydirectory") for (i in beg:fini) { png("test.png",width=277,height=277) #candidate image par(mai=c(0,0,0,0)) plot(1,type="n",ann=FALSE,xlim=c(0,255),ylim=c(0,255), xaxt="n",yaxt="n",frame.plot=F) polygon(x=c(10,60,60),y=c(10,10,60),col="red") graphics.off() image<-readPNG("test.png") #code where I get rgb values for original png("test2.png",width=277,height=277) #candidate image with diferent params par(mai=c(0,0,0,0)) plot(1,type="n",ann=FALSE,xlim=c(0,255),ylim=c(0,255), xaxt="n",yaxt="n",frame.plot=F) polygon(x=c(10,60,60),y=c(10,10,60),col="blue") graphics.off() image<-readPNG("test2.png") #code where I get rgb values for second image, and compare } } And the error message: Error in png("test.png", widt
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R Unable To Open Connection To X11 Display
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Unable To Open File For Writing R
Watch 251 Star 1,946 Fork 1,073 rstudio/shiny Code Issues 191 Pull requests error in grdevices 5 Projects 0 Wiki Pulse Graphs New issue unable to start device PNG #354 Closed 360yewuzhicheng opened this Issue http://stackoverflow.com/questions/14093834/unable-to-open-png-device-in-loop Dec 31, 2013 · 2 comments Projects None yet Labels None yet Milestone 0.9.0 Assignees No one assigned 2 participants 360yewuzhicheng commented Dec 31, 2013 I want to install shiny web framework , but https://github.com/rstudio/shiny/issues/354 it fail . When I visit the url , the error come out .Error message is :unable to start device PNG 360yewuzhicheng commented Dec 31, 2013 Help RStudio member yihui commented Dec 31, 2013 duplicate of https://groups.google.com/forum/#!topic/shiny-discuss/ZC8x-pJkNaQ yihui closed this Dec 31, 2013 Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment Contact GitHub API Training Shop Blog About © 2016 GitHub, Inc. Terms Privacy Security Status Help You can't perform that action at this time. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session.
cloning? Learn how to clone a repository. Clone in SourceTree Atlassian SourceTree is a free Git and Mercurial https://bitbucket.org/young_computation/rose/pull-requests/1 client for Windows. Atlassian SourceTree is a free Git and Mercurial https://groups.google.com/d/topic/shiny-discuss/5OTYzHhTXLs client for Mac. young_computation Untitled project ROSE Pull requests Pull requests #1 Open Source Repository dyndna Branch dyndna/-suggest-fix-for-error-unable-to-start-d-1452109589398 Destination Repository young_computation Branch master ### Suggest fix for error: unable to start device PNG Bitbucket cannot automatically merge this request. The commits unable to that make up this pull request have been removed. Bitbucket cannot automatically merge this request due to conflicts. Review the conflicts on the Overview tab. You can then either decline the request or merge it manually on your local system using the following commands: git checkout master git remote unable to start add dyndna/rose https://bitbucket.org/dyndna/rose.git git fetch dyndna/rose git merge --no-ff -m 'Merged in dyndna/rose/dyndna/-suggest-fix-for-error-unable-to-start-d-1452109589398 (pull request #1)' remotes/dyndna/rose/dyndna/-suggest-fix-for-error-unable-to-start-d-1452109589398 Overview Commits Activity Author Samir Amin Reviewers Description Suggest fix for error: unable to start device PNG Reproduce error: On headless machines like cluster computing environment, default png command expects X11 device and throws following error: Running ROSE_main.py with required arguments gives following error: > png(filename=plotFileName,height=600,width=600) Error in .External2(C_X11, paste("png::", filename, sep = ""), g$width, : unable to start device PNG Calls: png In addition: Warning message: In png(filename = plotFileName, height = 600, width = 600) : unable to open connection to X11 display '' Execution halted` Suggested fix: Replace libpng device requirement with cairo device in line 166 of file: ROSE_callSuper.R png(filename=plotFileName,height=600,width=600, type="cairo") END Learn about pull requests Comments (0) Pull request updated. Reload Blog Support Plans & pricing Documentation API Site status Version info Terms of service Privacy policy English Gi
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