[37] | 1 | function sys = dellmi(F,thelmi) |
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| 2 | %dellmi (OBSOLETE) Deletes a constraint in an LMI object |
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| 3 | % |
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| 4 | % F = DELLMI(F,n) Delete the n'th LMIs |
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| 5 | % F = DELLMI(F,'tag') Delete the LMIs having specified tag |
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| 6 | % |
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| 7 | % See also LMI, UPDATELMI |
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| 8 | |
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| 9 | |
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| 10 | % Author Johan Löfberg |
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| 11 | % $Id: dellmi.m,v 1.3 2005/02/04 10:10:26 johanl Exp $ |
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| 12 | |
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| 13 | if nargin ~=2 |
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| 14 | error('DELLMI needs two argument') |
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| 15 | end |
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| 16 | |
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| 17 | if ~(isa(F,'lmi') & (isa(thelmi,'double') | isa(thelmi,'char'))) |
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| 18 | error('First argument should be an lmi object and second argument integer or string') |
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| 19 | end |
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| 20 | |
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| 21 | % If indexed using handle, convert to index |
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| 22 | if isa(thelmi,'char') |
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| 23 | thelmitemp = []; |
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| 24 | for i = 1:size(F.clauses,2) |
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| 25 | if strcmp(F.clauses{i}.handle,thelmi) |
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| 26 | thelmitemp=[thelmitemp i]; |
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| 27 | end |
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| 28 | end |
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| 29 | if isempty(thelmitemp) |
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| 30 | em = ['LMI ''' thelmi ''' not available.']; |
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| 31 | error(em) |
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| 32 | else |
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| 33 | thelmi = thelmitemp; |
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| 34 | end |
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| 35 | end |
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| 36 | |
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| 37 | % Checks so that it exist |
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| 38 | if any((thelmi<1)) | any((thelmi>size(F.clauses,2))) |
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| 39 | em = ['LMI #' num2str(thelmi) ' not available.']; |
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| 40 | error(em) |
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| 41 | end |
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| 42 | sys = F; |
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| 43 | del_lmi = thelmi(logical(thelmi<=size(F.clauses,2))); |
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| 44 | if ~isempty(del_lmi) |
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| 45 | keep_lmi = setdiff(1:size(F.clauses,2),del_lmi); |
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| 46 | sys.clauses = {F.clauses{keep_lmi}}; |
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| 47 | sys.LMIid = sys.LMIid(keep_lmi); |
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| 48 | end |
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