Thanks a lot, Paul! Best wishes Troels At 20:05 29-11-2005, you wrote: >Hi > > >Troels Ring wrote: >>Dear friends, I was drawing a circle with centrum in (1,-1) and >>radius 5 to show my girl that the line y=3*x+1 goes through (1,4) >>and (-2,-5) of the circle, but on Windows XP, R 2.20 the drawing >>was not good at all, and the known solutions were not shown in the >>graph. I guess I got it wrong? Is this use not intended ? >>Best wishes >>Troels Ring, MD >>Aalborg, Denmark >>symbols(x=1,y=-1,circles=5,inches=FALSE, xlim=c(-10,10),ylim=c(-10,10)) >>curve(3*x+1,-10,10,1000,add=T) >>abline(v=c(-2,1)) >>abline(h=c(-1,-5,4)) > > >The important part may be that your plot is not square. In the >help file for symbols() it says (NOTE the "x axis") ... > > inches: If 'inches' is 'FALSE', the units are taken to be those of > the x axis. > >If you precede your code with ... > > par(pty="s") > >... does the result look better? > >Paul >-- >Dr Paul Murrell >Department of Statistics >The University of Auckland >Private Bag 92019 >Auckland >New Zealand >64 9 3737599 x85392 >[EMAIL PROTECTED] >http://www.stat.auckland.ac.nz/~paul/
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