Ellipse.m

 function h=ellipse(ra,rb,ang,x0,y0,C,Nb)
 % Ellipse adds ellipses to the current plot
 %
 % ELLIPSE(ra,rb,ang,x0,y0) adds an ellipse with semimajor axis of ra,

% a semimajor axis of radius rb, a semimajor axis of ang, centered at % the point x0,y0. % % The length of ra, rb, and ang should be the same. % If ra is a vector of length L and x0,y0 scalars, L ellipses % are added at point x0,y0. % If ra is a scalar and x0,y0 vectors of length M, M ellipse are with the same % radii are added at the points x0,y0. % If ra, x0, y0 are vectors of the same length L=M, M ellipses are added. % If ra is a vector of length L and x0, y0 are vectors of length % M~=L, L*M ellipses are added, at each point x0,y0, L ellipses of radius ra. % % ELLIPSE(ra,rb,ang,x0,y0,C) % adds ellipses of color C. C may be a string ('r','b',...) or the RGB value. % If no color is specified, it makes automatic use of the colors specified by % the axes ColorOrder property. For several circles C may be a vector. % % ELLIPSE(ra,rb,ang,x0,y0,C,Nb), Nb specifies the number of points % used to draw the ellipse. The default value is 300. Nb may be used % for each ellipse individually. % % h=ELLIPSE(...) returns the handles to the ellipses. % % as a sample of how ellipse works, the following produces a red ellipse % tipped up at a 45 deg axis from the x axis % ellipse(1,2,pi/8,1,1,'r') % % note that if ra=rb, ELLIPSE plots a circle %

% written by D.G. Long, Brigham Young University, based on the % CIRCLES.m original % written by Peter Blattner, Institute of Microtechnology, University of % Neuchatel, Switzerland, blattner@imt.unine.ch