Reading graphics files
On Tue, 24 Jun 2003 drf5n at mug.sys.virginia.edu wrote:
Is there a tool for reading a graphics file into an object? I might not be looking with the correct vocabulary, but I'm finding lots of references to producing graphics from R, but not any for inputting graphics into R. I'd like to use a jpeg image and have the data available in R for analysis. I could convert the image to another format, PPM perhaps, and parse that in, GRASS seems like overkill for a small project, and reading an image seems like something that someone else has probably already done.
library(pixmap), perhaps? Reads PNM (so PPM, PGM, PBM).
Any pointers?
?png # output only
?bitmap # output only
help.search("ppm") |image|graphics|read|png|bitmap all seem like outputs
R-data.pdf points the way -- Has anyone imported a graphic file?
Thanks for your time,
Dave
Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Breiviksveien 40, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 93 93 e-mail: Roger.Bivand at nhh.no