Hello,
Em 09-09-2012 18:36, Fred escreveu:
hey Sarah, thanks for your help !! Of Course I put the second quote also (I forgot to put it on the last post). Sorry, I don't get the my.plot.code...
What Sarah meant is that you must put your.plot.code between the instructions that open and close the graphics device. This is example 1 from the 'gplots::heatmap.2' help page, adapted.
# From ?gplots::heatmap.2 library(gplots) data(mtcars) x <- as.matrix(mtcars) # Plot nothing, but like Jeff said (suggested) it does something # it opens the device and closes it png(file = "myplot.png", bg = "transparent") dev.off() # 318 bytes file in current directory # Plot an heatmap.2, example 1 in ?gplots::heatmap.2 png(file = "heatmap2.png") heatmap.2(x) ## default - dendrogram plotted and reordering done. dev.off() ## 10Kb file in current dir # The same but to a jpeg graphics device jpeg(file = "heatmap2.jpeg") heatmap.2(x) ## same as above dev.off() ## 46Kb file Hope this helps, Rui Barradas
# I'm new in R and use it only to draw heatmaps right now. Well, I did forget the dev.off(). # but I got null device (1) # when quartz is turned off and when it's on I get : " quartz 2". But I don't have any files called "heatmap.2.png " on my computer. I really don't understand why I don't get anything ! and when I do:jpeg ("heatmap.jpg") # it works but I get only a 20kb picture which is useless in my case (edit and work on it in photoshop)Fred -- View this message in context: http://r.789695.n4.nabble.com/how-to-save-a-heatmap-2-in-png-jpeg-tiff-tp4642607p4642615.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ [email protected] 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.
______________________________________________ [email protected] 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.
