freehanddraw

Draw smooth lines freehand on images or plots; return the handle and xy data of the line object.

[LINEOBJ,XS,YS] = FREEHANDDRAW(ax_handle,line_options)

Draw a smooth freehand line object on the current axis (default),or on the axis specified by handle in the first input argument. Left-click once to begin drawing, right-click to terminate, or double-click to close contour and terminate.

INPUT ARGUMENTS: First: axis handle (optional)
Additional: valid line property/value pairs

OUTPUT ARGUMENTS: 1) Handle to line object
2) x-data
3) y-data
(Note that output args 2 & 3 can also be extracted from the first output argument.)

Ex: [myobj,xs,ys] = freehanddraw(gca,'color','r','linewidth',3);
freehanddraw('linestyle','--');

Written by Brett Shoelson, PhD
[e-mail]
3/29/05. Modified 10/05/06 to allow double-click contour closure.