Dear ALL, I fear my question has already been answered many times before, but I haven't fund that in archives...
I am working on spatial datasets and, in most arrays I'm handling, there are two columns dedicated to (x,y)-coords. For different reasons - notably to draw image() plots, I need to have these two columns sorted in increasing order. But sort() and order() seem to apply to vectors - or one single column - only. Could somedy please let me know how to sort two columns of a dataframe, with priority to one of them, just like in access ? Thanks, Jacques VESLOT CIRAD Another related question : How to put legend on image() plots - or image-based plots like image.kriging() in geoR ? Despite help pages, I haven't succeeded. ----------------------------------------------------- CIRAD 3P Reunion - MailScanner ----------------------------------------------------- Ce message a été vérifié par MailScanner et analyse par 4 antivirus : ClamAv - BitDefender - F-Prot - Panda. Aucun virus,ni rien de suspect n'a été trouvé. This message has been scanned for viruses and dangerous content, and is believed to be clean. ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html