INPOLY

Select dataset objects inside / outside a polygon in a scatter plot

   [JIN,JOUT] = INPOLY(A,H)

Input
A	2D dataset
H	handle returned by IMPOLY

Output
JIN	Object indices of A inside polygon
JOUT	Object indices of A outside polygon

Description

The purpose of this routine is to find the objects inside / outside  a polygon created by IMPOLY on a scatterplot, e.g. created by SCATTERD.

Example(s)

 delfigs
 a = gendatb;
 scatterd(a)
 disp('Draw a polygon in the scatterplot')
 h = impoly;  % use the mouse to draw a polygon in the scatterplot
 [jin,jout] = inpoly(a,h);
 hold on; scatterd(a(jin,:),'ko'); % encircle selected objects
 figure;  scatterd(a(jout,:));     % show objects outside polygon
 showfigs

See also

scatterd, impoly,