Would the image() function do what you need? n = sample(1:50,25); g = gray(n/max(n)) # set up color palate g = rev(g) # reverse so max is black instead of white image(as.matrix(n),col=g) # Requires a matrix input
I think you should be able to handle axes/ labels/ etc as normal: image(as.matrix(n),col=g,xaxt="n",yaxt="n",main="Very Important Data") If you adjust the aspect ratio, you can get your desired bar shape/size. Michael Weylandt On Mon, Aug 8, 2011 at 5:10 PM, Justin Fincher <finc...@cs.fsu.edu> wrote: > Howdy, > I am trying to make a simple monochrome heatmap from 1 row of data. > Essentially, I just want a long bar where black represents the max value > in > the data, white is the minimum, and all values in between are interpolated > appropriately. I have tried using heatmap and heatmap.2, but both have > issues. heatmap seems to be restricted to only drawing a square plot, and > this data requires a long, thin plot (e.g. 50px tall by 3000 px wide). For > heatmap.2, the plots will draw the dimensions I prefer, but when I do a > small sample the coloring seems to not correlate with the data even though > I > have Rowv and Colv both set to FALSE. Any recommendations about the best > way to make a clean, simple heatmap from a single array of positive > integers > would be greatly appreciated. > > - Fincher > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > [[alternative HTML version deleted]] ______________________________________________ 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.
