Home > matpower7.0 > lib > savecase.m

savecase

PURPOSE ^

SAVECASE Saves a MATPOWER case file, given a filename and the data.

SYNOPSIS ^

function fname_out = savecase(fname, varargin)

DESCRIPTION ^

SAVECASE  Saves a MATPOWER case file, given a filename and the data.
   SAVECASE(FNAME, CASESTRUCT)
   SAVECASE(FNAME, CASESTRUCT, VERSION)
   SAVECASE(FNAME, BASEMVA, BUS, GEN, BRANCH)
   SAVECASE(FNAME, BASEMVA, BUS, GEN, BRANCH, GENCOST)
   SAVECASE(FNAME, BASEMVA, BUS, GEN, BRANCH, AREAS, GENCOST)
   SAVECASE(FNAME, COMMENT, CASESTRUCT)
   SAVECASE(FNAME, COMMENT, CASESTRUCT, VERSION)
   SAVECASE(FNAME, COMMENT, BASEMVA, BUS, GEN, BRANCH)
   SAVECASE(FNAME, COMMENT, BASEMVA, BUS, GEN, BRANCH, GENCOST)
   SAVECASE(FNAME, COMMENT, BASEMVA, BUS, GEN, BRANCH, AREAS, GENCOST)

   FNAME = SAVECASE(FNAME, ...)

   Writes a MATPOWER case file, given a filename and data struct or list of
   data matrices. The FNAME parameter is the name of the file to be created or
   overwritten. If FNAME ends with '.mat' it saves the case as a MAT-file
   otherwise it saves it as an M-file. Optionally returns the filename,
   with extension added if necessary. The optional COMMENT argument is
   either string (single line comment) or a cell array of strings which
   are inserted as comments. When using a MATPOWER case struct, if the
   optional VERSION argument is '1' it will modify the data matrices to
   version 1 format before saving.

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SUBFUNCTIONS ^

SOURCE CODE ^

0001 function fname_out = savecase(fname, varargin)
0002 %SAVECASE  Saves a MATPOWER case file, given a filename and the data.
0003 %   SAVECASE(FNAME, CASESTRUCT)
0004 %   SAVECASE(FNAME, CASESTRUCT, VERSION)
0005 %   SAVECASE(FNAME, BASEMVA, BUS, GEN, BRANCH)
0006 %   SAVECASE(FNAME, BASEMVA, BUS, GEN, BRANCH, GENCOST)
0007 %   SAVECASE(FNAME, BASEMVA, BUS, GEN, BRANCH, AREAS, GENCOST)
0008 %   SAVECASE(FNAME, COMMENT, CASESTRUCT)
0009 %   SAVECASE(FNAME, COMMENT, CASESTRUCT, VERSION)
0010 %   SAVECASE(FNAME, COMMENT, BASEMVA, BUS, GEN, BRANCH)
0011 %   SAVECASE(FNAME, COMMENT, BASEMVA, BUS, GEN, BRANCH, GENCOST)
0012 %   SAVECASE(FNAME, COMMENT, BASEMVA, BUS, GEN, BRANCH, AREAS, GENCOST)
0013 %
0014 %   FNAME = SAVECASE(FNAME, ...)
0015 %
0016 %   Writes a MATPOWER case file, given a filename and data struct or list of
0017 %   data matrices. The FNAME parameter is the name of the file to be created or
0018 %   overwritten. If FNAME ends with '.mat' it saves the case as a MAT-file
0019 %   otherwise it saves it as an M-file. Optionally returns the filename,
0020 %   with extension added if necessary. The optional COMMENT argument is
0021 %   either string (single line comment) or a cell array of strings which
0022 %   are inserted as comments. When using a MATPOWER case struct, if the
0023 %   optional VERSION argument is '1' it will modify the data matrices to
0024 %   version 1 format before saving.
0025 
0026 %   MATPOWER
0027 %   Copyright (c) 1996-2016, Power Systems Engineering Research Center (PSERC)
0028 %   by Carlos E. Murillo-Sanchez, PSERC Cornell & Universidad Nacional de Colombia
0029 %   and Ray Zimmerman, PSERC Cornell
0030 %
0031 %   This file is part of MATPOWER.
0032 %   Covered by the 3-clause BSD License (see LICENSE file for details).
0033 %   See https://matpower.org for more info.
0034 
0035 %% define named indices into bus, gen, branch matrices
0036 [PQ, PV, REF, NONE, BUS_I, BUS_TYPE, PD, QD, GS, BS, BUS_AREA, VM, ...
0037     VA, BASE_KV, ZONE, VMAX, VMIN, LAM_P, LAM_Q, MU_VMAX, MU_VMIN] = idx_bus;
0038 [GEN_BUS, PG, QG, QMAX, QMIN, VG, MBASE, GEN_STATUS, PMAX, PMIN, ...
0039     MU_PMAX, MU_PMIN, MU_QMAX, MU_QMIN, PC1, PC2, QC1MIN, QC1MAX, ...
0040     QC2MIN, QC2MAX, RAMP_AGC, RAMP_10, RAMP_30, RAMP_Q, APF] = idx_gen;
0041 [F_BUS, T_BUS, BR_R, BR_X, BR_B, RATE_A, RATE_B, RATE_C, ...
0042     TAP, SHIFT, BR_STATUS, PF, QF, PT, QT, MU_SF, MU_ST, ...
0043     ANGMIN, ANGMAX, MU_ANGMIN, MU_ANGMAX] = idx_brch;
0044 [PW_LINEAR, POLYNOMIAL, MODEL, STARTUP, SHUTDOWN, NCOST, COST] = idx_cost;
0045 
0046 %% default arguments
0047 if ischar(varargin{1}) || iscell(varargin{1})
0048     if ischar(varargin{1})
0049         comment = {varargin{1}};    %% convert char to single element cell array
0050     else
0051         comment = varargin{1};
0052     end
0053     [args{1:(length(varargin)-1)}] = deal(varargin{2:end});
0054 else
0055     comment = {''};
0056     args = varargin;
0057 end
0058 mpc_ver = '2';              %% default MATPOWER case file version
0059 if isstruct(args{1})        %% 1st real argument is a struct
0060     mpc = args{1};
0061     if length(args) > 1
0062         mpc.version = args{2};
0063         mpc_ver = mpc.version;
0064     end
0065     baseMVA = mpc.baseMVA;
0066     bus     = mpc.bus;
0067     gen     = mpc.gen;
0068     branch  = mpc.branch;
0069     if isfield(mpc, 'areas')
0070         areas   = mpc.areas;
0071     end
0072     if isfield(mpc, 'gencost')
0073         gencost = mpc.gencost;
0074     end
0075 else                        %% 1st real argument is NOT a struct
0076     baseMVA = args{1};
0077     bus     = args{2};
0078     gen     = args{3};
0079     branch  = args{4};
0080     mpc.baseMVA = baseMVA;
0081     mpc.bus     = bus;
0082     mpc.gen     = gen;
0083     mpc.branch  = branch;
0084     if length(args) == 5
0085         gencost = args{5};
0086         mpc.gencost = gencost;
0087     end
0088     if length(args) == 6
0089         areas   = args{5};
0090         gencost = args{6};
0091         mpc.areas   = areas;
0092         mpc.gencost = gencost;
0093     end
0094 end
0095 
0096 %% modifications for version 1 format
0097 if strcmp(mpc_ver, '1')
0098     %% remove extra columns of gen
0099     if size(gen, 2) >= MU_QMIN
0100         gen = gen(:, [1:PMIN, MU_PMAX:MU_QMIN]);
0101     else
0102         gen = gen(:, 1:PMIN);
0103     end
0104     %% use the version 1 values for column names
0105     shift = MU_PMAX - PMIN - 1;
0106     tmp = num2cell([MU_PMAX, MU_PMIN, MU_QMAX, MU_QMIN] - shift);
0107     [MU_PMAX, MU_PMIN, MU_QMAX, MU_QMIN] = deal(tmp{:});
0108     
0109     %% remove extra columns of branch
0110     if size(branch, 2) >= MU_ST
0111         branch = branch(:, [1:BR_STATUS, PF:MU_ST]);
0112     elseif size(branch, 2) >= QT
0113         branch = branch(:, [1:BR_STATUS, PF:QT]);
0114     else
0115         branch = branch(:, 1:BR_STATUS);
0116     end
0117     %% use the version 1 values for column names
0118     shift = PF - BR_STATUS - 1;
0119     tmp = num2cell([PF, QF, PT, QT, MU_SF, MU_ST] - shift);
0120     [PF, QF, PT, QT, MU_SF, MU_ST] = deal(tmp{:});
0121 end
0122 
0123 %% verify valid filename
0124 [pathstr, fcn_name, extension] = fileparts(fname);
0125 if isempty(extension)
0126     extension = '.m';
0127 end
0128 if regexp(fcn_name, '\W')
0129     old_fcn_name = fcn_name;
0130     fcn_name = regexprep(fcn_name, '\W', '_');
0131     fprintf('WARNING: ''%s'' is not a valid function name, changed to ''%s''\n', old_fcn_name, fcn_name);
0132 end
0133 fname = fullfile(pathstr, [fcn_name extension]);
0134 
0135 %% open and write the file
0136 if strcmp(upper(extension), '.MAT')     %% MAT-file
0137     if strcmp(mpc_ver, '1')
0138         if exist('areas', 'var') && exist('gencost', 'var')
0139             save(fname, 'baseMVA', 'bus', 'gen', 'branch', 'areas', 'gencost');
0140         else
0141             save(fname, 'baseMVA', 'bus', 'gen', 'branch');
0142         end
0143     else
0144         save(fname, 'baseMVA', 'mpc');
0145     end
0146 else                                %% M-file
0147     %% open file
0148     [fd, msg] = fopen(fname, 'wt');     %% print it to an M-file
0149     if fd == -1
0150         error(['savecase: ', msg]);
0151     end
0152     
0153     %% function header, etc.
0154     if strcmp(mpc_ver, '1')
0155         if exist('areas', 'var') && exist('gencost', 'var') && ~isempty(gencost)
0156             fprintf(fd, 'function [baseMVA, bus, gen, branch, areas, gencost] = %s\n', fcn_name);
0157         else
0158             fprintf(fd, 'function [baseMVA, bus, gen, branch] = %s\n', fcn_name);
0159         end
0160         prefix = '';
0161     else
0162         fprintf(fd, 'function mpc = %s\n', fcn_name);
0163         prefix = 'mpc.';
0164     end
0165     if isempty(comment{1})
0166         comment{1} = sprintf('%s', upper(fcn_name));
0167     else
0168         comment{1} = sprintf('%s  %s', upper(fcn_name), comment{1});
0169     end
0170     for k = 1:length(comment)
0171         fprintf(fd, '%%%s\n', comment{k});
0172     end
0173     fprintf(fd, '\n%%%% MATPOWER Case Format : Version %s\n', mpc_ver);
0174     if ~strcmp(mpc_ver, '1')
0175         fprintf(fd, 'mpc.version = ''%s'';\n', mpc_ver);
0176     end
0177     fprintf(fd, '\n%%%%-----  Power Flow Data  -----%%%%\n');
0178     fprintf(fd, '%%%% system MVA base\n');
0179     fprintf(fd, '%sbaseMVA = %.9g;\n', prefix, baseMVA);
0180     
0181     %% bus data
0182     ncols = size(bus, 2);
0183     fprintf(fd, '\n%%%% bus data\n');
0184     fprintf(fd, '%%\tbus_i\ttype\tPd\tQd\tGs\tBs\tarea\tVm\tVa\tbaseKV\tzone\tVmax\tVmin');
0185     if ncols >= MU_VMIN             %% opf SOLVED, save with lambda's & mu's
0186         fprintf(fd, '\tlam_P\tlam_Q\tmu_Vmax\tmu_Vmin');
0187     end
0188     fprintf(fd, '\n%sbus = [\n', prefix);
0189     if ncols < MU_VMIN              %% opf NOT SOLVED, save without lambda's & mu's
0190         fprintf(fd, '\t%d\t%d\t%.9g\t%.9g\t%.9g\t%.9g\t%d\t%.9g\t%.9g\t%.9g\t%d\t%.9g\t%.9g;\n', bus(:, 1:VMIN).');
0191     else                            %% opf SOLVED, save with lambda's & mu's
0192         fprintf(fd, '\t%d\t%d\t%.9g\t%.9g\t%.9g\t%.9g\t%d\t%.9g\t%.9g\t%.9g\t%d\t%.9g\t%.9g\t%.4f\t%.4f\t%.4f\t%.4f;\n', bus(:, 1:MU_VMIN).');
0193     end
0194     fprintf(fd, '];\n');
0195     
0196     %% generator data
0197     ncols = size(gen, 2);
0198     fprintf(fd, '\n%%%% generator data\n');
0199     fprintf(fd, '%%\tbus\tPg\tQg\tQmax\tQmin\tVg\tmBase\tstatus\tPmax\tPmin');
0200     if ~strcmp(mpc_ver, '1')
0201         fprintf(fd, '\tPc1\tPc2\tQc1min\tQc1max\tQc2min\tQc2max\tramp_agc\tramp_10\tramp_30\tramp_q\tapf');
0202     end
0203     if ncols >= MU_QMIN             %% opf SOLVED, save with mu's
0204         fprintf(fd, '\tmu_Pmax\tmu_Pmin\tmu_Qmax\tmu_Qmin');
0205     end
0206     fprintf(fd, '\n%sgen = [\n', prefix);
0207     if ncols < MU_QMIN              %% opf NOT SOLVED, save without mu's
0208         if strcmp(mpc_ver, '1')
0209             fprintf(fd, '\t%d\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%d\t%.9g\t%.9g;\n', gen(:, 1:PMIN).');
0210         else
0211             fprintf(fd, '\t%d\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%d\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g;\n', gen(:, 1:APF).');
0212         end
0213     else
0214         if strcmp(mpc_ver, '1')
0215             fprintf(fd, '\t%d\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%d\t%.9g\t%.9g\t%.4f\t%.4f\t%.4f\t%.4f;\n', gen(:, 1:MU_QMIN).');
0216         else
0217             fprintf(fd, '\t%d\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%d\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.4f\t%.4f\t%.4f\t%.4f;\n', gen(:, 1:MU_QMIN).');
0218         end
0219     end
0220     fprintf(fd, '];\n');
0221     
0222     %% branch data
0223     ncols = size(branch, 2);
0224     fprintf(fd, '\n%%%% branch data\n');
0225     fprintf(fd, '%%\tfbus\ttbus\tr\tx\tb\trateA\trateB\trateC\tratio\tangle\tstatus');
0226     if ~strcmp(mpc_ver, '1')
0227         fprintf(fd, '\tangmin\tangmax');
0228     end
0229     if ncols >= QT                  %% power flow SOLVED, save with line flows
0230         fprintf(fd, '\tPf\tQf\tPt\tQt');
0231     end
0232     if ncols >= MU_ST               %% opf SOLVED, save with mu's
0233         fprintf(fd, '\tmu_Sf\tmu_St');
0234         if ~strcmp(mpc_ver, '1')
0235             fprintf(fd, '\tmu_angmin\tmu_angmax');
0236         end
0237     end
0238     fprintf(fd, '\n%sbranch = [\n', prefix);
0239     if ncols < QT                   %% power flow NOT SOLVED, save without line flows or mu's
0240         if strcmp(mpc_ver, '1')
0241             fprintf(fd, '\t%d\t%d\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%d;\n', branch(:, 1:BR_STATUS).');
0242         else
0243             fprintf(fd, '\t%d\t%d\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%d\t%.9g\t%.9g;\n', branch(:, 1:ANGMAX).');
0244         end
0245     elseif ncols < MU_ST            %% power flow SOLVED, save with line flows but without mu's
0246         if strcmp(mpc_ver, '1')
0247             fprintf(fd, '\t%d\t%d\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%d\t%.4f\t%.4f\t%.4f\t%.4f;\n', branch(:, 1:QT).');
0248         else
0249             fprintf(fd, '\t%d\t%d\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%d\t%.9g\t%.9g\t%.4f\t%.4f\t%.4f\t%.4f;\n', branch(:, 1:QT).');
0250        end
0251     else                            %% opf SOLVED, save with lineflows & mu's
0252         if strcmp(mpc_ver, '1')
0253             fprintf(fd, '\t%d\t%d\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%d\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f;\n', branch(:, 1:MU_ST).');
0254         else
0255             fprintf(fd, '\t%d\t%d\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%.9g\t%d\t%.9g\t%.9g\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f;\n', branch(:, 1:MU_ANGMAX).');
0256         end
0257     end
0258     fprintf(fd, '];\n');
0259     
0260     %% OPF data
0261     if (exist('areas', 'var') && ~isempty(areas)) || ...
0262         (exist('gencost', 'var') && ~isempty(gencost))
0263         fprintf(fd, '\n%%%%-----  OPF Data  -----%%%%');
0264     end
0265     if exist('areas', 'var') && ~isempty(areas)
0266         %% area data
0267         fprintf(fd, '\n%%%% area data\n');
0268         fprintf(fd, '%%\tarea\trefbus\n');
0269         fprintf(fd, '%sareas = [\n', prefix);
0270         if ~isempty(areas)
0271             fprintf(fd, '\t%d\t%d;\n', areas(:, 1:2).');
0272         end
0273         fprintf(fd, '];\n');
0274     end
0275     if exist('gencost', 'var') && ~isempty(gencost)
0276         %% generator cost data
0277         fprintf(fd, '\n%%%% generator cost data\n');
0278         fprintf(fd, '%%\t1\tstartup\tshutdown\tn\tx1\ty1\t...\txn\tyn\n');
0279         fprintf(fd, '%%\t2\tstartup\tshutdown\tn\tc(n-1)\t...\tc0\n');
0280         fprintf(fd, '%sgencost = [\n', prefix);
0281         if ~isempty(gencost)
0282             n1 = 2 * max(gencost(gencost(:, MODEL) == PW_LINEAR,  NCOST));
0283             n2 =     max(gencost(gencost(:, MODEL) == POLYNOMIAL, NCOST));
0284             n = max([n1; n2]);
0285             if size(gencost, 2) < n + 4
0286                 error('savecase: gencost data claims it has more columns than it does');
0287             end
0288             template = '\t%d\t%.9g\t%.9g\t%d';
0289             for i = 1:n
0290                 template = [template, '\t%.9g'];
0291             end
0292             template = [template, ';\n'];
0293             fprintf(fd, template, gencost(:, 1:n+4).');
0294         end
0295         fprintf(fd, '];\n');
0296     end
0297     
0298     if ~strcmp(mpc_ver, '1')
0299         %% generalized OPF user data
0300         if (isfield(mpc, 'A') && ~isempty(mpc.A)) || ...
0301                 (isfield(mpc, 'N') && ~isempty(mpc.N))
0302             fprintf(fd, '\n%%%%-----  Generalized OPF User Data  -----%%%%');
0303         end
0304 
0305         %% user constraints
0306         if isfield(mpc, 'A') && ~isempty(mpc.A)
0307             %% A
0308             fprintf(fd, '\n%%%% user constraints\n');
0309             print_sparse(fd, sprintf('%sA', prefix), mpc.A);
0310             if isfield(mpc, 'l') && ~isempty(mpc.l) && ...
0311                     isfield(mpc, 'u') && ~isempty(mpc.u)
0312                 fprintf(fd, 'lbub = [\n');
0313                 fprintf(fd, '\t%.9g\t%.9g;\n', [mpc.l mpc.u].');
0314                 fprintf(fd, '];\n');
0315                 fprintf(fd, '%sl = lbub(:, 1);\n', prefix);
0316                 fprintf(fd, '%su = lbub(:, 2);\n\n', prefix);
0317             elseif isfield(mpc, 'l') && ~isempty(mpc.l)
0318                 fprintf(fd, '%sl = [\n', prefix);
0319                 fprintf(fd, '\t%.9g;\n', mpc.l);
0320                 fprintf(fd, '];\n\n');
0321             elseif isfield(mpc, 'u') && ~isempty(mpc.u)
0322                 fprintf(fd, '%su = [\n', prefix);
0323                 fprintf(fd, '\t%.9g;\n', mpc.u);
0324                 fprintf(fd, '];\n');
0325             end
0326         end
0327 
0328         %% user costs
0329         if isfield(mpc, 'N') && ~isempty(mpc.N)
0330             fprintf(fd, '\n%%%% user costs\n');
0331             print_sparse(fd, sprintf('%sN', prefix), mpc.N);
0332             if isfield(mpc, 'H') && ~isempty(mpc.H)
0333                 print_sparse(fd, sprintf('%sH', prefix), mpc.H);
0334             end
0335             if isfield(mpc, 'fparm') && ~isempty(mpc.fparm)
0336                 fprintf(fd, 'Cw_fparm = [\n');
0337                 fprintf(fd, '\t%.9g\t%d\t%.9g\t%.9g\t%.9g;\n', [mpc.Cw mpc.fparm].');
0338                 fprintf(fd, '];\n');
0339                 fprintf(fd, '%sCw    = Cw_fparm(:, 1);\n', prefix);
0340                 fprintf(fd, '%sfparm = Cw_fparm(:, 2:5);\n', prefix);
0341             else
0342                 fprintf(fd, '%sCw = [\n', prefix);
0343                 fprintf(fd, '\t%.9g;\n', mpc.Cw);
0344                 fprintf(fd, '];\n');
0345             end
0346         end
0347 
0348         %% user vars
0349         if isfield(mpc, 'z0') || isfield(mpc, 'zl') || isfield(mpc, 'zu')
0350             fprintf(fd, '\n%%%% user vars\n');
0351         end
0352         if isfield(mpc, 'z0') && ~isempty(mpc.z0)
0353             fprintf(fd, '%sz0 = [\n', prefix);
0354             fprintf(fd, '\t%.9g;\n', mpc.z0);
0355             fprintf(fd, '];\n');
0356         end
0357         if isfield(mpc, 'zl') && ~isempty(mpc.zl)
0358             fprintf(fd, '%szl = [\n', prefix);
0359             fprintf(fd, '\t%.9g;\n', mpc.zl);
0360             fprintf(fd, '];\n');
0361         end
0362         if isfield(mpc, 'zu') && ~isempty(mpc.zu)
0363             fprintf(fd, '%szu = [\n', prefix);
0364             fprintf(fd, '\t%.9g;\n', mpc.zu);
0365             fprintf(fd, '];\n');
0366         end
0367 
0368         %% (optional) generator unit types
0369         if isfield(mpc, 'gentype') && iscell(mpc.gentype)
0370             ng = length(mpc.gentype);
0371             if size(mpc.gen, 1) ~= ng
0372                 warning('savecase: gentype field does not have the expected dimensions (length = %d, expected %d)', ng, size(mpc.gen, 1));
0373             end
0374             
0375             fprintf(fd, '\n%%%% generator unit type (see GENTYPES)\n');
0376             fprintf(fd, '%sgentype = {\n', prefix);
0377             for k = 1:ng
0378                 fprintf(fd, '\t''%s'';\n', mpc.gentype{k});
0379             end
0380             fprintf(fd, '};\n');
0381         end
0382 
0383         %% (optional) generator fuel types
0384         if isfield(mpc, 'genfuel') && iscell(mpc.genfuel)
0385             ng = length(mpc.genfuel);
0386             if size(mpc.gen, 1) ~= ng
0387                 warning('savecase: genfuel field does not have the expected dimensions (length = %d, expected %d)', ng, size(mpc.gen, 1));
0388             end
0389             
0390             fprintf(fd, '\n%%%% generator fuel type (see GENFUELS)\n');
0391             fprintf(fd, '%sgenfuel = {\n', prefix);
0392             for k = 1:ng
0393                 fprintf(fd, '\t''%s'';\n', mpc.genfuel{k});
0394             end
0395             fprintf(fd, '};\n');
0396         end
0397 
0398         %% (optional) bus names
0399         if isfield(mpc, 'bus_name') && iscell(mpc.bus_name)
0400             nb = length(mpc.bus_name);
0401             if size(mpc.bus, 1) ~= nb
0402                 warning('savecase: bus_name field does not have the expected dimensions (length = %d, expected %d)', nb, size(mpc.bus, 1));
0403             end
0404             
0405             fprintf(fd, '\n%%%% bus names\n');
0406             fprintf(fd, '%sbus_name = {\n', prefix);
0407             for k = 1:nb
0408                 fprintf(fd, '\t''%s'';\n', strrep(mpc.bus_name{k}, '''', ''''''));
0409             end
0410             fprintf(fd, '};\n');
0411         end
0412 
0413         %% execute userfcn callbacks for 'savecase' stage
0414         if isfield(mpc, 'userfcn')
0415             run_userfcn(mpc.userfcn, 'savecase', mpc, fd, prefix);
0416         end
0417     end
0418 
0419     %% close file
0420     if fd ~= 1
0421         fclose(fd);
0422     end
0423 end
0424 
0425 if nargout > 0
0426     fname_out = fname;
0427 end
0428 
0429 
0430 
0431 function print_sparse(fd, varname, A)
0432 
0433 [i, j, s] = find(A);
0434 [m, n] = size(A);
0435 
0436 if isempty(s)
0437     fprintf(fd, '%s = sparse(%d, %d);\n', varname, m, n);
0438 else
0439     fprintf(fd, 'ijs = [\n');
0440     if m == 1           %% i, j, s are row vectors
0441         fprintf(fd, '\t%d\t%d\t%.9g;\n', [i; j; s]);
0442     else                %% i, j, s are column vectors
0443         fprintf(fd, '\t%d\t%d\t%.9g;\n', [i j s].');
0444     end
0445     fprintf(fd, '];\n');
0446     fprintf(fd, '%s = sparse(ijs(:, 1), ijs(:, 2), ijs(:, 3), %d, %d);\n', varname, m, n);
0447 end

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