Hi Saikat, I don't know whether this can be done with ggplot, but if you don't get another answer, have a look at the second example for the "barp" function in the plotrix package. This shows how to get a specified range on the color legend using the "xrange" argument.
Jim On Fri, Dec 18, 2015 at 2:52 PM, Saikat Dutta Chowdhury < saikatduttachowdh...@gmail.com> wrote: > Hello. > I have more than one phi-psi time series data files each having 50000 time > points. > I am trying to create density plots (2d histograms) for each and then I > would like to compare them. But to be able to compare one plot with the > other I need to have similar colour densities (i.e colour gradient (which > depends on counts) will be same for each). But I am unable to control the > colour gradient and thus unable to compare the plots. > > I was using ggplot2 library. After getting the phi-psi data into R I was > doing the following steps: > > > *df <- data.frame(phi[,2],psi[,2])* > > *p <- ggplot(df,aes(phi[,2],psi[,2]),ymin=c(-180,180),xmin=c(-180,180))* > *p + stat_bin2d(bins=100)* > > after executing these steps I am getting the density plot with the colour > gradient legend at the left side with a certain range (say 0-200). I want > to control this colour gradient parameter so that I can fix this range to > 0-600 for all the plots and thus be able to compare them. > > Any help would be appreciated. > > With regards, > -- > Saikat Dutta Chowdhury > Research Fellow > University of Calcutta > India > Mobile: 8017650842 > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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 -- To UNSUBSCRIBE and more, see 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.
