On Nov 27, 2012, at 11:06 , Jean-Paul Marcel Vallée wrote:
> Dear R users,
>
> When I draw a circle with R on my Mac, the line is not smooth at 0 and 180
> degree even when I am using a high number of point. Is there a way to improve
> this rendering in the quartz window?
>
> Thank's
>
> JPV
>
>
>
> f2 <- function(x){
> (1-x^2)^.5
> }
>
> x1min=-100000;
> x1max=100000;
> sf=100000;
>
> plot(f2, (x1min:x1max)/sf, col="blue", ylim=range(-1,1))
Read the help page for plot.function (again?) and notice that its second
argument does not do what I think you think it does. Increasing the value of n=
might be more fruitful.
--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: [email protected] Priv: [email protected]
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