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aggiunto minlen all'integratore adattivo locale

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Giovanni Di Grezia
2014-12-07 20:00:25 +01:00
parent d65fd0e0a9
commit 8968dbd158
1 changed files with 8 additions and 3 deletions
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9
functions/integratore_adattivo_locale.m
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@@ -13,27 +13,32 @@ function [ area, err, ier ] = integratore_adattivo_locale( f, m, toll , maxite )
% err = errore assoluto
% ier = indice di errore
minlen_factor=1e-6;
[x,~] = size(m);
i=1;
k=i+1;
j=x;
minlen=(m(j,1) - m(i,1)) * minlen_factor ;
ite = 0;
area=0;
err = 0;
ier = 0;
while (i <= j - 1) && (ite < maxite)
while (i <= j - 1) && (ite < maxite) &&( (m(j,1) - m(i,1)) > minlen )
ltoll = (toll * (m(k,1) - m(i,1))) / (m(j,1) - m(i,1));
[~,larea,lerr,m1] = static_quadratic(f,m(i:k,:));
m=[m(1:i-1,:);m1;m(k+1:j,:)];
ite = ite + 1;
j= j + 1;
while (lerr > ltoll) && (ite < maxite)
while (lerr > ltoll) && (ite < maxite) &&( (m(j,1) - m(i,1)) > minlen )
ltoll = (toll * (m(k,1) - m(i,1))) / (m(j,1) - m(i,1));
[~,larea,lerr,m1] = static_quadratic(f,m(i:k,:));
m=[m(1:i-1,:);m1;m(k+1:j,:)];
ite = ite + 1;
j= j + 1;
end
if (m(j,1) - m(i,1)) <= minlen
disp('Warning: Minlen raggiunto')
end
area = area + larea;
err = err + lerr;