These "carpet plots" are also called "heat maps" and there's a current thread with the subject line "Heat Maps" in which I've given a couple of examples of code for them. The R function image() is very easy to use:
image( x=(x values), y=(y values), z=(matrix of z values with x rows and y columns), col=(vector of colors), breaks=(vector of break points, one more than colors) ) What I'd like to know is: does anyone know how to easily create a legend/key to the color gradients, like the one in the right margin of Mueller's first example: (http://www.johannes-hopf.de/wordpress/wp-content/uploads/2009/12/Zufall-300x225.png)? // joseph w. clark , phd candidate \\ usc marshall school of business ---------------------------------------- > Date: Mon, 2 Jul 2012 20:05:12 +0200 > From: mueller.eisb...@googlemail.com > To: r-help@r-project.org > Subject: [R] carpet plots > > Hi all, > I wonder why there is so little software for carpet plots (german: > Rasterdiagramm) (Three dimensional plot (x, y, z), the 3rd dimension > (z) symbolized by colourgradients). Besides from one or the other non > free software I only found an OpenOffice macro, a combination of > Gnuplot and Excel (an Excel macro calling gnuplot) > (http://www.johannes-hopf.de/2009/12/carpet-plot-version-1-3/9 and > Quikgrid (http://www.galiander.ca/quikgrid/) which I use for > bathymetric maps. > > Though I use one or two R scripts I have no deeper knowledge. Because > I think "That's a thing R can do!", I suppose, there are scripts for > this purpose. Perhaps one of you knows such a script. I would be very > grateful if you could point me to some information on this subject. > > Richard > > -- > Richard Müller . Am Spring 9 . D-58802 Balve > www.oeko-sorpe.de > > ______________________________________________ > R-help@r-project.org 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. > ______________________________________________ R-help@r-project.org 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.
