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annotate +grid/old/triang_map.m @ 99:ecf77a50d4fe feature/arclen-param

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The arclength parameter function was slow because it called fzero. Now it is constructed once and for all with splines. Much better performance.
author Martin Almquist <martin.almquist@it.uu.se>
date Sun, 06 Dec 2015 15:41:42 +0100
parents 48b6fb693025
children
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1 % Creates a grid [X,Y] from the mapping function S at points in vectors u,v
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2 function [X, Y] = traing_map(S,u,v)
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3 error('not done')
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4 if nargin == 2
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5 v = u;
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6 end
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7
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8 if isscalar(u)
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9 u = linspace(0,1,u);
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10 end
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11
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12 if isscalar(v)
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13 v = linspace(0,1,v);
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14 end
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15
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16 nu = length(u);
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17 nv = length(v);
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18
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19 X = zeros(nu,nv);
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20 Y = zeros(nu,nv);
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21
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22 for i = 1:nu
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23 for j = 1:nv
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24 [x,y] = S(u(i),v(j));
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25 X(i,j) = x;
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26 Y(i,j) = y;
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27 end
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28 end
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29 end