GLPK_OPTIONS Sets options for GLPK.
OPT = GLPK_OPTIONS
OPT = GLPK_OPTIONS(OVERRIDES)
OPT = GLPK_OPTIONS(OVERRIDES, FNAME)
OPT = GLPK_OPTIONS(OVERRIDES, MPOPT)
Sets the values for the options struct normally passed to
GLPK.
Inputs are all optional, second argument must be either a string
(FNAME) or a struct (MPOPT):
OVERRIDES - struct containing values to override the defaults
FNAME - name of user-supplied function called after default
options are set to modify them. Calling syntax is:
MODIFIED_OPT = FNAME(DEFAULT_OPT);
MPOPT - MATPOWER options struct, uses the following fields:
verbose - used to set opt.msglev
glpk.opts - struct containing values to use as OVERRIDES
glpk.opt_fname - name of user-supplied function used as FNAME,
except with calling syntax:
MODIFIED_OPT = FNAME(DEFAULT_OPT, MPOPT);
Output is an options struct to pass to GLPK.
There are multiple ways of providing values to override the default
options. Their precedence and order of application are as follows:
With inputs OVERRIDES and FNAME
1. FNAME is called
2. OVERRIDES are applied
With inputs OVERRIDES and MPOPT
1. FNAME (from glpk.opt_fname) is called
2. glpk.opts (if not empty) are applied
3. OVERRIDES are applied
Example:
If glpk.opt_fname = 'glpk_user_options_3', then after setting the
default GLPK options, GLPK_OPTIONS will execute the following
user-defined function to allow option overrides:
opt = glpk_user_options_3(opt, mpopt);
The contents of glpk_user_options_3.m, could be something like:
function opt = glpk_user_options_3(opt, mpopt)
opt.lpsolver = 1;
opt.dual = 2;
See the documentation for the PARAM argument at
http://www.gnu.org/software/octave/doc/interpreter/Linear-Programming.html
or by typing 'help glpk'.
See also GLPK, MPOPTION.0001 function opt = glpk_options(overrides, mpopt) 0002 %GLPK_OPTIONS Sets options for GLPK. 0003 % 0004 % OPT = GLPK_OPTIONS 0005 % OPT = GLPK_OPTIONS(OVERRIDES) 0006 % OPT = GLPK_OPTIONS(OVERRIDES, FNAME) 0007 % OPT = GLPK_OPTIONS(OVERRIDES, MPOPT) 0008 % 0009 % Sets the values for the options struct normally passed to 0010 % GLPK. 0011 % 0012 % Inputs are all optional, second argument must be either a string 0013 % (FNAME) or a struct (MPOPT): 0014 % 0015 % OVERRIDES - struct containing values to override the defaults 0016 % FNAME - name of user-supplied function called after default 0017 % options are set to modify them. Calling syntax is: 0018 % MODIFIED_OPT = FNAME(DEFAULT_OPT); 0019 % MPOPT - MATPOWER options struct, uses the following fields: 0020 % verbose - used to set opt.msglev 0021 % glpk.opts - struct containing values to use as OVERRIDES 0022 % glpk.opt_fname - name of user-supplied function used as FNAME, 0023 % except with calling syntax: 0024 % MODIFIED_OPT = FNAME(DEFAULT_OPT, MPOPT); 0025 % 0026 % Output is an options struct to pass to GLPK. 0027 % 0028 % There are multiple ways of providing values to override the default 0029 % options. Their precedence and order of application are as follows: 0030 % 0031 % With inputs OVERRIDES and FNAME 0032 % 1. FNAME is called 0033 % 2. OVERRIDES are applied 0034 % With inputs OVERRIDES and MPOPT 0035 % 1. FNAME (from glpk.opt_fname) is called 0036 % 2. glpk.opts (if not empty) are applied 0037 % 3. OVERRIDES are applied 0038 % 0039 % Example: 0040 % 0041 % If glpk.opt_fname = 'glpk_user_options_3', then after setting the 0042 % default GLPK options, GLPK_OPTIONS will execute the following 0043 % user-defined function to allow option overrides: 0044 % 0045 % opt = glpk_user_options_3(opt, mpopt); 0046 % 0047 % The contents of glpk_user_options_3.m, could be something like: 0048 % 0049 % function opt = glpk_user_options_3(opt, mpopt) 0050 % opt.lpsolver = 1; 0051 % opt.dual = 2; 0052 % 0053 % See the documentation for the PARAM argument at 0054 % 0055 % http://www.gnu.org/software/octave/doc/interpreter/Linear-Programming.html 0056 % 0057 % or by typing 'help glpk'. 0058 % 0059 % 0060 % See also GLPK, MPOPTION. 0061 0062 % MATPOWER 0063 % $Id: glpk_options.m 2339 2014-06-27 18:47:49Z ray $ 0064 % by Ray Zimmerman, PSERC Cornell 0065 % Copyright (c) 2010-2013 by Power System Engineering Research Center (PSERC) 0066 % 0067 % This file is part of MATPOWER. 0068 % See http://www.pserc.cornell.edu/matpower/ for more info. 0069 % 0070 % MATPOWER is free software: you can redistribute it and/or modify 0071 % it under the terms of the GNU General Public License as published 0072 % by the Free Software Foundation, either version 3 of the License, 0073 % or (at your option) any later version. 0074 % 0075 % MATPOWER is distributed in the hope that it will be useful, 0076 % but WITHOUT ANY WARRANTY; without even the implied warranty of 0077 % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 0078 % GNU General Public License for more details. 0079 % 0080 % You should have received a copy of the GNU General Public License 0081 % along with MATPOWER. If not, see <http://www.gnu.org/licenses/>. 0082 % 0083 % Additional permission under GNU GPL version 3 section 7 0084 % 0085 % If you modify MATPOWER, or any covered work, to interface with 0086 % other modules (such as MATLAB code and MEX-files) available in a 0087 % MATLAB(R) or comparable environment containing parts covered 0088 % under other licensing terms, the licensors of MATPOWER grant 0089 % you additional permission to convey the resulting work. 0090 0091 %%----- initialization and arg handling ----- 0092 %% defaults 0093 verbose = 2; 0094 fname = ''; 0095 0096 %% second argument 0097 if nargin > 1 && ~isempty(mpopt) 0098 if ischar(mpopt) %% 2nd arg is FNAME (string) 0099 fname = mpopt; 0100 have_mpopt = 0; 0101 else %% 2nd arg is MPOPT (MATPOWER options struct) 0102 have_mpopt = 1; 0103 verbose = mpopt.verbose; 0104 if isfield(mpopt.glpk, 'opt_fname') && ~isempty(mpopt.glpk.opt_fname) 0105 fname = mpopt.glpk.opt_fname; 0106 end 0107 end 0108 else 0109 have_mpopt = 0; 0110 end 0111 0112 %%----- set default options for GLPK ----- 0113 %% printing 0114 opt.msglev = verbose; 0115 0116 %%----- call user function to modify defaults ----- 0117 if ~isempty(fname) 0118 if have_mpopt 0119 opt = feval(fname, opt, mpopt); 0120 else 0121 opt = feval(fname, opt); 0122 end 0123 end 0124 0125 %%----- apply overrides ----- 0126 if have_mpopt && isfield(mpopt.glpk, 'opts') && ~isempty(mpopt.glpk.opts) 0127 opt = nested_struct_copy(opt, mpopt.glpk.opts); 0128 end 0129 if nargin > 0 && ~isempty(overrides) 0130 opt = nested_struct_copy(opt, overrides); 0131 end