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Diffusion FENNECS: Finite Element Non-Neutral Electron Cloud Simulator (geom_test) Browse

fennecs/matlab/C2xyz.m
118e68d1a0d5geom_test

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C2xyz.m
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function [x,y,z] = C2xyz(C)
% C2XYZ returns the x and y coordinates of contours in a contour
% matrix and their corresponding z values. C is the contour matrix given by
% the contour function.
%
%
%% Syntax
%
% [x,y] = C2xyz(C)
% [x,y,z] = C2xyz(C)
%
%% Description
%
% [x,y] = C2xyz(C) returns x and y coordinates of contours in a contour
% matrix C
%
% [x,y,z] = C2xyz(C) also returns corresponding z values.
%
%
%% Example
% Given a contour plot, you want to know the (x,y) coordinates of the contours,
% as well as the z value corresponding to each contour line.
%
% C = contour(peaks);
% [x,y,z] = C2xyz(C);
%
% This returns 1 x numberOfContourLines cells of x values and y values, and
% their corresponding z values are given in a 1 x numberOfContourLines
% array. If you'd like to plot a heavy black line along all of the z=0
% contours and a dotted red line along the z = -2 contours, try this:
%
% hold on; % Allows plotting atop the preexisting peaks plot.
% for n = find(z==0); % only loop through the z = 0 values.
% plot(x{n},y{n},'k','linewidth',2)
% end
%
% for n = find(z==-2) % now loop through the z = -2 values.
% plot(x{n},y{n},'r:','linewidth',2)
% end
%
% * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
% Created by Chad Greene, August 2013.
%
% * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
% See also contour, contourf, clabel, contour3, and C2xy.
m(1)=1;
n=1;
try
while n<length(C)
n=n+1;
m(n) = m(n-1)+C(2,m(n-1))+1;
end
end
for nn = 1:n-2
x{nn} = C(1,m(nn)+1:m(nn+1)-1);
y{nn} = C(2,m(nn)+1:m(nn+1)-1);
if nargout==3
z(nn) = C(1,m(nn));
end
end
end
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