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comparison +sbp/+implementations/d1_upwind_5.m @ 266:bfa130b7abf6 operator_remake

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Added error message for too few grid points to all implementation files.
author Martin Almquist <martin.almquist@it.uu.se>
date Fri, 09 Sep 2016 11:03:13 +0200
parents 6009f2712d13
children f7ac3cd6eeaa
comparison
equal deleted inserted replaced
265:3e0432b3cb68 266:bfa130b7abf6
1 function [H, HI, Dp, Dm, e_1, e_m] = d1_upwind_5(m,h) 1 function [H, HI, Dp, Dm, e_1, e_m] = d1_upwind_5(m,h)
2
3 if(m<8)
4 error('Operator requires at least 8 grid points');
5 end
6
2 Hv=ones(m,1); 7 Hv=ones(m,1);
3 Hv(1:4)=[0.251e3/0.720e3; 0.299e3/0.240e3; 0.211e3/0.240e3; 0.739e3/0.720e3;]; 8 Hv(1:4)=[0.251e3/0.720e3; 0.299e3/0.240e3; 0.211e3/0.240e3; 0.739e3/0.720e3;];
4 Hv(m-3:m)=rot90(Hv(1:4),2); 9 Hv(m-3:m)=rot90(Hv(1:4),2);
5 Hv = Hv*h; 10 Hv = Hv*h;
6 H = spdiag(Hv,0); 11 H = spdiag(Hv,0);