Try
a<-1.975 # valore x del centro b<-1.215 # valores y del centro r<-1.46 # radio symbols(a,b,circle=r,inches=F)
Hope it works
PS:
Espero que te funcione.
Saludos desde Medell{in, Colombia.On Thu, 19 May 2005 05:14:44 -0500, Mario Morales <[EMAIL PROTECTED]> wrote:
Hi.
I need to draw a circle whit center (a,b) and radio r. So I use the R code below
a<-1.975 # valore x del centro
b<-1.215 # valores y del centro
r<-1.46 # radio
x1<-seq(a-r,a+r,by=0.01); #los valores de x
yp<-sqrt(r^2-(x1-a)^2)+b; # los valores y a partir de la raÃz positiva
yn<-(-1)*sqrt(r^2-(x1-a)^2)+b; # los valores y a partir de la raÃz negativa
x<-c(x1,x1); y<-c(yp,yn);
plot(x,y,type="l",ylab="",xlab="",xlim=range(x),ylim=range(y));
My circle have two problems.
First. I don't want the horizontal line and I don't know how avoid it.
Second. It is shaped like ellipse. I need adjust the x and y scales, but I don't know how.
Can you help me???
there is another way to draw a circle whit R ?
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