Dear R-users, I wonder whether it is possible to speed up plots of 2-dimensional images (such as image() or levelplot()) in order to export lower quality versions of the resulting plots.
I intend to export a large number of images in order to construct animated gifs. For this purpose, I used the png()-function in conncection with image() and levelplot(). But the underlying arrays are so big (900x900 entries) that the export of every single image takes very long. Using caTools for exporting animated gifs from 3-dimensional arrays (dim(array)=c(900,900,No of plots) works extremely fast, but unfortunately, the level of flexibility for plot design is very low (no labelling, legends etc.). I guess the problem is that levelplot() or image() first plot a full quality image. Only on export, the quality settings from png() or jpeg() (e.g. for resolution) become effective. How could I provide quality settings before the time consuming plotting process starts? Thanks a lot in advance for any kind of help! Best regards, Maik ______________________________________________ [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.
