I have an R script working and it is nearly done but there is one final problem. I am using the png(filename = " ", width = N, height = M, units =" ", ...) function in R but it is appending the width, height, and units flags to the png filenames. I can't find a way in the default help to fix this.
The exact command I am using is
for(i in 1:length(lst)){
png(paste0(filename = paste( lst[i]), ".png", width = 1280, height = 688, units = "px"))
...all plotting code...
dev.off()
}
Where lst[i] a list of filenames read through a loop. I end up with the .png files being called
idq27qecq.png1280688px where 1280688px is the stuff I dont want in the name. The png files are also all incorrectly sized, and have a size of 480 by 480 pixels.
How can I fix this?
If I remove the paste0 at the beginning I get the error
Error in png(filename = paste(lst[i]), ".png", width = 1280, height = 688, : invalid 'pointsize' argument
and also
In png(filename = paste(lst[i]), ".png", width = 1280, height = 688, : NAs introduced by coercion
Any help fixing the names and sizes of my output images would be helpful. I looked at this post save multiple plots r into separate jpg but it did not work even though I tried to implement it.
All of this is being done in the Rstudio engine through a script.
The first paste0 is not needed, also the second paste should be used only to create filename value. Try :
for(i in 1:length(lst)){
png(filename = paste(lst[i], ".png"), width = 1280, height = 688, units = "px")
#
#...all plotting code...
#
dev.off()
}