Many thanks, Matt. for pointing that out. It certainly looks very promising -- but also there is an awful lot to study! [Pause, while I head for the coffee-maker]
Ted. On 16-Jul-08 20:31:44, Austin, Matt wrote: > Dr. Harrell's Hmisc package has labcurve. > > --Matt > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Ted Harding > Sent: Wednesday, July 16, 2008 1:17 PM > To: [EMAIL PROTECTED] > Subject: [R] Labelling curves on graphs > > Hi Folks, > I'd be grateful for good suggestions about the following. > > I'm plotting a family of (X,Y) curves (for different levels of another > variable, Z): say 6 curves in all but could be more or less -- it's a > rather variables situation. > > I'd like to label each curve with the value of Z that it corresponds > to. > > The problem is that the layout (shapes, spacings, ranges of X over > which non-NA values of Y get plotted) of the curves are very variable, > and somewhat unpredictable beforehand. > > Of course one could simply wait until the graph was done, and then by > hand position one's labels to the best effect. > That, given time, is on a certain sense the optimum solution. > But I'd like to be able to do a satisfactory job automatically, and > quickly! > > This is the sort of problem already solved, in one particular way, in > contour(). But here the curves are broken at the labels and the labels > are centred on the curves (though nicely aligned with the curves). > > It might be satisfactory for me to place each label so that its > baseline is on its curve, thus without overlaying the curve with the > text. So maybe a "displaced" analogue of the way contour() does it > (including alignment of the text) may be OK. > > Anothe possibility, for instance, is to draw lines from the ends of the > curves to antries in a plotted table of Z-values. This could end up > looking very untidym, though. > > I grant that this is a vague query. I'm still trying to form a clear > view of how it ought to be approached; and I don't have R code to refer > to and experiment with (that of contour() is hidden in its "method"). > > But people out there must have faced it, and I'd be grateful for their > own feedback from the coal-face! > > With thanks, > Ted. > > -------------------------------------------------------------------- > E-Mail: (Ted Harding) <[EMAIL PROTECTED]> > Fax-to-email: +44 (0)870 094 0861 > Date: 16-Jul-08 Time: 21:17:13 > ------------------------------ XFMail ------------------------------ > > ______________________________________________ > 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. -------------------------------------------------------------------- E-Mail: (Ted Harding) <[EMAIL PROTECTED]> Fax-to-email: +44 (0)870 094 0861 Date: 16-Jul-08 Time: 22:03:45 ------------------------------ XFMail ------------------------------ ______________________________________________ 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.
