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1 | function Q=getbasematrix(X,ind) |
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2 | %GETBASEMATRIX Internal function to extract basematrix for variable IND |
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3 | |
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4 | % Author Johan Löfberg |
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5 | % $Id: getbasematrix.m,v 1.3 2006/07/26 20:17:58 joloef Exp $ |
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6 | |
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7 | if ind==0 |
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8 | base = X.basis(:,1); |
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9 | Q = reshape(base,X.dim(1),X.dim(2)); |
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10 | return; |
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11 | end |
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12 | |
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13 | here = find(X.lmi_variables==ind); |
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14 | if isempty(here) |
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15 | Q = sparse(X.dim(1),X.dim(2)); |
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16 | else |
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17 | base = X.basis(:,here+1); |
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18 | Q = reshape(base,X.dim(1),X.dim(2)); |
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19 | end |
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20 | |
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21 | |
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