since heatmap is a graphic image it needs the "graphics" library. you can see these two in the examples for heatmap.
require(graphics); require(grDevices) Markus Mühlbacher wrote: > > Dear R community! > > I am trying to create a heatmap based on the following data. As you can > see the diagonal (0,0 to 10,10) is always 0). If I run the heatmap command > like i posted it I get a graph with horizontal lines. > > What is my mistake? > >> heatmap(activity.matrix, Rowv = NA, Colv = NA, scale="column", xlab="x >> Compounds", ylab="y Compounds", col=topo.colors(100)) >> activity.matrix > [,1] [,2] [,3] [,4] [,5] [,6] > [1,] 0.0000000 -0.1017802 0.3635007 0.62522118 0.8869417 -0.4652809 > [2,] 0.1017802 0.0000000 0.4652809 0.72700138 0.9887219 -0.3635007 > [3,] -0.3635007 -0.4652809 0.0000000 0.26172050 0.5234410 -0.8287816 > [4,] -0.6252212 -0.7270014 -0.2617205 0.00000000 0.2617205 -1.0905021 > [5,] -0.8869417 -0.9887219 -0.5234410 -0.26172050 0.0000000 -1.3522226 > [6,] 0.4652809 0.3635007 0.8287816 1.09050206 1.3522226 0.0000000 > [7,] -0.2471805 -0.3489607 0.1163202 0.37804072 0.6397612 -0.7124613 > [8,] 1.0032619 0.9014817 1.3667626 1.62848308 1.8902036 0.5379810 > [9,] -0.6833813 -0.7851615 -0.3198806 -0.05816011 0.2035604 -1.1486622 > [10,] 1.0759620 0.9741818 1.4394627 1.70118322 1.9629037 0.6106812 > [,7] [,8] [,9] [,10] > [1,] 0.2471805 -1.00326190 0.68338129 -1.07596204 > [2,] 0.3489607 -0.90148171 0.78516149 -0.97418184 > [3,] -0.1163202 -1.36676259 0.31988061 -1.43946272 > [4,] -0.3780407 -1.62848308 0.05816011 -1.70118322 > [5,] -0.6397612 -1.89020358 -0.20356039 -1.96290371 > [6,] 0.7124613 -0.53798102 1.14866217 -0.61068116 > [7,] 0.0000000 -1.25044237 0.43620083 -1.32314250 > [8,] 1.2504424 0.00000000 1.68664319 -0.07270014 > [9,] -0.4362008 -1.68664319 0.00000000 -1.75934333 > [10,] 1.3231425 0.07270014 1.75934333 0.00000000 > > Thanks in advance. > > Greets, > Markus > > > > > ______________________________________________ > 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. > > -- View this message in context: http://www.nabble.com/heatmap-plot-tp24572168p24574102.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
