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1 | function LinearVariables = depends(x) |
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2 | %DEPENDS Returns indicies to variables used in an SDPVAR object |
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3 | % |
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4 | % i = depends(x) |
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5 | % |
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6 | % Input |
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7 | % x : SDPVAR object |
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8 | % Output |
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9 | % i : DOUBLE |
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10 | |
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11 | % Author Johan Löfberg |
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12 | % $Id: depends.m,v 1.2 2006/08/11 11:48:15 joloef Exp $ |
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13 | |
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14 | [mt,variabletype] = yalmip('monomtable'); |
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15 | ncv = yalmip('nonCommutingTable'); |
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16 | |
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17 | % Simple linear cases |
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18 | if ~any(variabletype(x.lmi_variables)) |
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19 | LinearVariables = x.lmi_variables; |
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20 | else |
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21 | LinearVariables = []; |
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22 | for i = 1:length(x.lmi_variables) |
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23 | v = x.lmi_variables(i); |
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24 | if any(mt(v,:)) |
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25 | LinearVariables = [LinearVariables find(mt(v,:))]; |
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26 | else |
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27 | LinearVariables = [LinearVariables ncv(v,1+find(ncv(v,2:end)))]; |
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28 | if ~isnan(ncv(v,1)) |
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29 | v = ncv(v,1); |
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30 | LinearVariables = [LinearVariables find(mt(v,:))]; |
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31 | end |
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32 | end |
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33 | end |
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34 | end |
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35 | LinearVariables = unique(LinearVariables); |
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