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annotate stripeMatrixPeriodic.m @ 907:c0652621bd69 feature/utux2D

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Add new class multiblock.InterfaceOptions whose instances are passed to multiblock.DiffOp.
author Martin Almquist <malmquist@stanford.edu>
date Fri, 23 Nov 2018 20:12:54 -0800
parents 7368affc8f78
children bbf303c1f0cf
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7368affc8f78 Add D2 variable periodic for second order.
Martin Almquist <malmquist@stanford.edu>
parents:
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1 % Creates a periodic discretization matrix of size n x n
7368affc8f78 Add D2 variable periodic for second order.
Martin Almquist <malmquist@stanford.edu>
parents:
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2 % with the values of val on the diagonals diag.
7368affc8f78 Add D2 variable periodic for second order.
Martin Almquist <malmquist@stanford.edu>
parents:
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3 % A = stripeMatrix(val,diags,n)
7368affc8f78 Add D2 variable periodic for second order.
Martin Almquist <malmquist@stanford.edu>
parents:
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4 function A = stripeMatrixPeriodic(val,diags,n)
7368affc8f78 Add D2 variable periodic for second order.
Martin Almquist <malmquist@stanford.edu>
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5
7368affc8f78 Add D2 variable periodic for second order.
Martin Almquist <malmquist@stanford.edu>
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6 D = ones(n,1)*val;
7368affc8f78 Add D2 variable periodic for second order.
Martin Almquist <malmquist@stanford.edu>
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7 A = spdiagsVariablePeriodic(D,diags);
7368affc8f78 Add D2 variable periodic for second order.
Martin Almquist <malmquist@stanford.edu>
parents:
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8 end