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annotate m-toolbox/classes/@unit/factor.m @ 40:977eb37f31cb database-connection-manager

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User friendlier errors from utils.mysql.connect
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 18:04:03 +0100
parents f0afece42f48
children
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 % FACTOR factorises units in to numerator and denominator units.
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Daniele Nicolodi <nicolodi@science.unitn.it>
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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3 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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4 % DESCRIPTION: FACTOR factorises units in to numerator and denominator
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5 % units.
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6 %
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7 % CALL: [num, den] = factor(units)
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8 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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9 % INPUTS: 'units' - input unit object
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10 %
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11 % OUTPUTS:
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12 % 'num' - numerator unit object
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13 % 'den' - denominator unit object
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14 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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15 % CALL FOR PARAMETERS:
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16 %
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17 % obj.factor('INFO') % Retrieve method information
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18 %
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19 % VERSION: $Id: factor.m,v 1.4 2011/02/18 16:48:55 ingo Exp $
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20 %
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21 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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Daniele Nicolodi <nicolodi@science.unitn.it>
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22 function varargout = factor(varargin)
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23
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Daniele Nicolodi <nicolodi@science.unitn.it>
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24 % Get unit objects
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25 units = [varargin{:}];
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26
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Daniele Nicolodi <nicolodi@science.unitn.it>
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27 if numel(units) ~= 1
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28 error('### Please give (only) one input unit object');
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29 end
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30
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31 if isempty(units)
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Daniele Nicolodi <nicolodi@science.unitn.it>
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32 num = [];
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33 den = [];
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Daniele Nicolodi <nicolodi@science.unitn.it>
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34 else
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Daniele Nicolodi <nicolodi@science.unitn.it>
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35 % get indices
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Daniele Nicolodi <nicolodi@science.unitn.it>
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36 numi = units.exps>0;
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Daniele Nicolodi <nicolodi@science.unitn.it>
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37 deni = units.exps<0;
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38 % Make input units from denominator
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Daniele Nicolodi <nicolodi@science.unitn.it>
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39 den = unit();
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40 if any(deni)
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Daniele Nicolodi <nicolodi@science.unitn.it>
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41 den.strs = units.strs(deni);
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Daniele Nicolodi <nicolodi@science.unitn.it>
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42 den.exps = abs(units.exps(deni));
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Daniele Nicolodi <nicolodi@science.unitn.it>
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43 den.vals = units.vals(deni);
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44 end
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Daniele Nicolodi <nicolodi@science.unitn.it>
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45 % Make output units from numerator
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46 num = unit();
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47 if any(numi)
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48 num.strs = units.strs(numi);
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49 num.exps = units.exps(numi);
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50 num.vals = units.vals(numi);
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51 end
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52 end
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53
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54 if nargout == 2
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Daniele Nicolodi <nicolodi@science.unitn.it>
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55 varargout{1} = num;
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56 varargout{2} = den;
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57 else
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Daniele Nicolodi <nicolodi@science.unitn.it>
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58 error('### Incorrect outputs');
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59 end
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60
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61 end
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