Draw arc
Draw one or more arcs using classic graphics.
draw.arc(x=1,y=NULL,radius=1,angle1=deg1*pi/180,angle2=deg2*pi/180, deg1=0,deg2=45,n=0.05,col=NA,lwd=NA,...)
x |
x coordinate of center. Scalar or vector. |
y |
y coordinate of center. Scalar or vector. |
radius |
radius. Scalar or vector. |
angle1 |
Starting angle in radians. Scalar or vector. |
angle2 |
Ending angle in radians. Scalar or vector. |
deg1 |
Starting angle in degrees. Scalar or vector. |
deg2 |
Ending angle in degrees. Scalar or vector. |
n |
Number of polygons to use to approximate the arc. |
col |
Arc colors. |
lwd |
Line width for the arc. |
... |
Other arguments passed to segments. Vectorization is not supported for these. |
Draws one or more arcs from angle1 to angle2.
If angle1 is numerically greater than angle2,
then the angles are swapped.
Be sure to use an aspect ratio of 1 as shown in the example to avoid distortion. For argument 'n' (which may be either a scalar or a vector, although most likely you will leave it at the default value), an integer value means to use that number of segments to approximate the arc, while a non-integer value means to use enough segments so that the angle that successive segments make with one another is no more than n radians.
Returns a matrix of expanded arguments invisibly.
Gabor Grothendieck. Improvements by Ted Toal.
plot(1:10, asp = 1,main="Test draw.arc") draw.arc(5, 5, 1:10/10, deg2 = 1:10*10, col = "blue") draw.arc(8, 8, 1:10/10, deg2 = 1:10*10, col = 1:10) draw.arc(5, 5, 3, deg1=100, deg2=170, col="gold", lwd=50, lend=1) # example taken from post by Hans Borcher: # https://stat.ethz.ch/pipermail/r-help/2009-July/205728.html # Note setting of aspect ratio to 1 first. curve(sin(x), 0, pi, col="blue", asp=1) draw.arc(pi/2, 0, 1, deg1=45, deg2=135, col="red")
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.