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annotate sortd.m @ 815:fae41958af4f feature/burgers1d

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Add support for artificial viscosity to the 1d burgers scheme. - Add support for artificial viscosity by parametrizing the discretization operator and boundary closure on the viscosity. - Add a time stepper which evaluates and updates the residual viscosity of the solution.
author Vidar Stiernstrom <vidar.stiernstrom@it.uu.se>
date Thu, 06 Sep 2018 12:43:51 +0200
parents 48b6fb693025
children
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Jonatan Werpers <jonatan@werpers.com>
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1 % Sorts x with respect to the function d
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2 % d is a function that accepts an element of x and returns a scalar.
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3 function y = sortd(d,x)
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4 v = [];
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5 for i = 1:length(x)
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6 v(i) = d(x(i));
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7 end
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8
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9 [~,I] = sort(v);
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10 y = x(I);
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11 end