Does anyone have experience importing image files into R? I would like to be able to import such files, use R to analyze and compare and perhaps export again a modified file which can be displayed by the usual image display programs. -------------- next part -------------- An HTML attachment was scrubbed... URL: https://stat.ethz.ch/pipermail/r-help/attachments/20010303/ad72932b/attachment.html
On Sat, 3 Mar 2001, lhomer wrote:> Does anyone have experience importing image files into R? I would like to be able to import such files, use R to analyze and compare and perhaps export again a modified file which can be displayed by the usual image display programs. >I don't know what you're trying to do, but I suspect there are better tools available for image processing than R. The astronomers I know like Perl Data Language, MATLAB and its free work-alikes, Octave and Scilab. It's been a while since I looked at Perl Data Language; at the time I discovered it, it was pretty much UNIX-only, so I didn't do much with it, being constrained to Windows. Scilab is great on Windows, though. -- znmeb at aracnet.com (M. Edward Borasky) http://www.aracnet.com/~znmeb What phrase will you *never* hear Miss Piggy use? "You can't make a silk purse out of a sow's ear!" -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Is there R code somewhere for monotonic regression? I have some functions (computer response time curves) that are guaranteed by theory to be monotonic, and some experimental data where they are not. What I'd like to do is plot a smooth monotonic curve through the experimental points. There is no closed form expression for the curve, although there is a recursive difference equation formulation in some simple cases, so ordinary nonlinear regression is not the answer. I have Hardle's book (the title of which escapes me at the moment) which gives the algorithm, so I can code it if it doesn't exist already, but I was hoping it was already done. -- znmeb at aracnet.com (M. Edward Borasky) http://www.aracnet.com/~znmeb If God had meant carrots to be eaten cooked, He would have given rabbits fire. -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._