See ?par etc Setting ylim sets the bottom and top of the plot respectively, so plot(1:10, ylim=c(11,0), xlim=c(0,11), ylab='depth')
has 0,0 at top left and an inverted y-axis. S Ellison > -----Original Message----- > From: r-help-boun...@r-project.org > [mailto:r-help-boun...@r-project.org] On Behalf Of Richard Müller > Sent: 23 August 2012 07:20 > To: r-help@r-project.org > Subject: [R] Origin of coordinate system > > Dear R-community, > > In graphical representations of findings concerning bodies of > standing water (lakes e.g.) in x-y-plots you often make use > of a somewhat different definition of coordinates in a > cartesian system: > the origin is top-left, the x-axis (depth of the water body) > from top to bottom and the f(x)-axis from left to right, so > you can project the graphical representation of data in your > imagination into the lake. > > I wasn't able to find out if this is possible in R-plots of x-y-data. > I can treat the values, which are the x-values as y-values > and vice versa. In simple plots that gives what I want (with > the direction of the vertical axis from top to down with e.g. > ylim = c(60,0). But I am not content with this. y is f(x) and > not the other way round! I think, when I start with error > bars or similar, I will get in trouble. > Therefore my simple question: can I define a coordinate system with > (0,0) in the upper left and the x- and y-axis as I described? > > Thanks for your answers - 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. > ******************************************************************* This email and any attachments are confidential. Any use...{{dropped:8}} ______________________________________________ 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.
