Hi Peter! Many thanks -- I had overlooked that line. Ted. On 22-Oct-09 18:53:25, Peter Ehlers wrote: > Hi Ted, > > Here's what the last example in ?contour says: > > "## contourLines produces the same contour lines as contour" > > So, even without digging into the source, I would guess > that your hunch is correct. > > Cheers, > Peter Ehlers > > (Ted Harding) wrote: >> Hi Folks, >> I have been using contour() to produce some contour plots >> (of a spatially-smooted density produced by kde2d()), with >> very satisfactory results. >> >> I now want access to the coordinates of the points on the >> contours, and it would seem that contour() does not return a >> value, so there is nothing from which these could be extracted. >> >> However, apparently contourLines() does, and it seems to be >> invoked in essentially the same way (so far as the x,y,z >> and levels parameters are concerned). >> >> However, I am not sure whether the contour lines generated >> by contourLines() are the same numerically as those generated >> (at any rate plotted) by contour(). >> >> By over-plotting the coordinates from contourLines() on the >> contours plotted by contour(), it looks as though they may be >> the same. >> >> Advice would be appreciated! >> With thanks, >> Ted. >> >> -------------------------------------------------------------------- >> E-Mail: (Ted Harding) <ted.hard...@manchester.ac.uk> >> Fax-to-email: +44 (0)870 094 0861 >> Date: 22-Oct-09 Time: 19:03:37 >> ------------------------------ 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) <ted.hard...@manchester.ac.uk> Fax-to-email: +44 (0)870 094 0861 Date: 22-Oct-09 Time: 20:00:02 ------------------------------ 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.
