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1 | function y = kron(X,Y) |
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2 | %KRON (overloaded) |
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3 | |
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4 | % Author Johan Löfberg |
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5 | % $Id: kron.m,v 1.1 2006/08/10 18:00:21 joloef Exp $ |
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6 | |
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7 | if isequal(X,1) |
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8 | y = Y; |
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9 | return; |
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10 | end |
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11 | |
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12 | if isequal(Y,1); |
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13 | y = X; |
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14 | end |
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15 | |
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16 | if (isa(X,'sdpvar') & isa(Y,'sdpvar')) |
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17 | y = []; |
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18 | for i = 1:size(X,1) |
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19 | this_row = []; |
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20 | s.type = '()'; |
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21 | for j = 1:size(X,2); |
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22 | s.subs = {i,j}; |
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23 | this_row = [this_row subsref(X,s)*Y]; |
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24 | end |
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25 | y = [y;this_row]; |
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26 | end |
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27 | return |
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28 | end |
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29 | |
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30 | if isa(X,'sdpvar') |
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31 | lmi_variables = getvariables(X); |
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32 | nv = length(lmi_variables); |
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33 | y = X; |
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34 | sparse_Y = sparse(Y); |
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35 | temp = kron(getbasematrix(X,0),sparse_Y); |
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36 | y.basis=temp(:); |
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37 | for i = 1:nv |
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38 | temp = kron(getbasematrix(X,lmi_variables(i)),sparse_Y); |
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39 | y.basis(:,i+1) = temp(:); |
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40 | end; |
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41 | end |
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42 | |
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43 | if isa(Y,'sdpvar') |
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44 | lmi_variables = getvariables(Y); |
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45 | nv = length(lmi_variables); |
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46 | y = Y; |
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47 | sparse_X = sparse(X); |
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48 | temp = kron(sparse_X,getbasematrix(Y,0)); |
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49 | y.basis = temp(:); |
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50 | for i = 1:nv |
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51 | temp = kron(sparse_X,getbasematrix(Y,lmi_variables(i))); |
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52 | y.basis(:,i+1) = temp(:); |
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53 | end; |
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54 | end |
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55 | y.dim(1) = size(temp,1); |
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56 | y.dim(2) = size(temp,2); |
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57 | y = clean(y); |
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58 | % Reset info about conic terms |
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59 | y.conicinfo = [0 0]; |
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