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annotate m-toolbox/classes/@smodel/sop.m @ 0:f0afece42f48

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Import.
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Wed, 23 Nov 2011 19:22:13 +0100
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1 % SOP apply a symbolic operation to the expression.
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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3 %
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4 % DESCRIPTION: SOP apply a symbolic operation to the expression.
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5 % objects.
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6 %
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7 % CALL: obj = sop(mdl, plist)
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8 % obj = mdl.sop(plist)
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9 %
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10 % <a href="matlab:utils.helper.displayMethodInfo('smodel', 'sop')">Parameters Description</a>
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11 %
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12 % VERSION: $Id: sop.m,v 1.7 2011/04/08 08:56:28 hewitson Exp $
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13 %
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14 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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15
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16 function sop(mdls, callerIsMethod, smodel_invars, operation, args, pl, info, varargin)
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17
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18 import utils.const.*
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19
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20 if isempty(operation)
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21 error('### Please give a valid symbolic operator');
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22 end
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23
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24 % Loop over the input objects
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25 for jj = 1:numel(mdls)
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26 % Message
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27 utils.helper.msg(msg.PROC1, 'applying %s to %s ', operation, mdls(jj).name);
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28
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29 % Fix syntax (replacing .* with * and so) to allow symbolic evaluation
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30 mdls(jj).expr.s = utils.prog.convertComString(mdls(jj).expr.s , 'ToSymbolic');
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31
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32 % Go symbolic now
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33 d = feval(operation, sym(mdls(jj).expr.s), args{:});
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34
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35 % Go back to string
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36 mdls(jj).expr.s = utils.prog.mup2mat(d);
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37
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38 % Replace * like expressions with .* to allow numeric evaluation
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39 mdls(jj).expr.s = utils.prog.convertComString(mdls(jj).expr.s , 'FromSymbolic');
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40
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41 % In the case of transforms, sets the new x variable
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42 switch lower(operation)
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43 case {'laplace', 'ilaplace', 'fourier', 'ifourier', 'ztrans', 'iztrans'}
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44 if ~isempty(args)
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45 % The return variable is the last argument
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46 mdls(jj).xvar = args{end};
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47 end
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48 otherwise
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49 end
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50
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51 if ~callerIsMethod
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52 % Set new AO name
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53 mdls(jj).name = [operation '(' smodel_invars{jj} ')'];
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54 % Add history step
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55 mdls(jj).addHistory(info, pl, smodel_invars(jj), mdls(jj).hist);
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56 end
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57 end
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58
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59 end
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