xclip - set a clipping zone

Calling Sequence

xclip([x,y,w,h])

xclip(rect)

xclip("clipgrf")

Parameters

• x,y,w,h : real values.
• rect : row vector of size 4.

Description

xclip set a clipping zone given by the coordinates, in the current graphics scale, of the rectangle x,y,w,h (upper-left point, width, height). If only one argument is given, it stands for a rectangle specification rect=[x,y,w,h].

xclip("clipgrf") is used to clip the usual rectangle boundaries.

To unclip a region use the command xclip().

Examples

x=0:0.2:2*%pi;
x1=[sin(x);100*sin(x)];
y1=[cos(x);100*cos(x)];
y1=y1+20*ones(y1);
// No clip 
plot2d([-100,500],[-100,600],[-1,-1],"022")
xsegs(10*x1+200*ones(x1),10*y1+200*ones(y1))
// rectangle clipping zone 
xbasc(); plot2d([-100,500],[-100,600],[-1,-1],"022")
xrect(150,460,100,150)
xclip(150,460,100,150)
xsegs(10*x1+200*ones(x1),10*y1+200*ones(y1))
// usual rectangle boundaries clipping zone 
xbasc(); plot2d([-100,500],[-100,600],[-1,-1],"022")
xclip("clipgrf")
xsegs(10*x1+200*ones(x1),10*y1+200*ones(y1));
// clipping of
xclip()
 

Author

J.Ph.C.