annotate spzeros.m @ 1012:1e437c9e5132
feature/advectionRV
Create residual viscosity package +rv and generalize the ResidualViscosity class
- Generalize residual viscosity, by passing user-defined flux and calculating the time derivative outside of the update.
- Create separate RungekuttaRV specifically using interior RV updates
- Separate the artifical dissipation operator from the scheme AdvectionRV1D so that the same scheme can be reused for creating the diff op used by the ResidualViscosity class
| author |
Vidar Stiernström <vidar.stiernstrom@it.uu.se> |
| date |
Wed, 05 Dec 2018 13:44:10 +0100 |
| parents |
13d2f20c0c0d |
| children |
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| rev |
line source |
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488
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1 function S = spzeros(varargin)
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2 switch length(varargin)
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3 case 2
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4 S = sparse(varargin{1}, varargin{2});
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5 case 1
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6 v = varargin{1};
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7 switch length(v)
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8 case 1
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9 S = sparse(v,v);
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10 case 2
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11 S = sparse(v(1), v(2));
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12 otherwise
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13 error('Input must be either one integer, two integers or a vector with two integers');
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14 end
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15 otherwise
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16 error('Too many input arguments.');
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17 end
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18 end
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