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annotate m-toolbox/classes/@tsdata/getX.m @ 24:056f8e1e995e database-connection-manager

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author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 16:20:06 +0100
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1 % GETX Get the property 'x'.
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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3 %
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4 % DESCRIPTION: Get the property 'x'.
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5 %
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6 % CALL: val = obj.getX();
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7 % val = obj.getX(idx);
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8 % val = obj.getX(1:10);
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9 %
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10 % INPUTS: obj - must be a single tsdata object.
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11 % idx - index of the data samples
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12 %
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13 % VERSION: $Id: getX.m,v 1.13 2011/07/05 06:32:40 mauro Exp $
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14 %
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15 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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16
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17 function x = getX(obj, idx)
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18
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19 ly = length(obj.y);
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20 sx = size(obj.x);
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21 ts = 1/obj.fs;
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22 if sx(1) == 0 && sx(2) == 0 && ly>0
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23 x = 0:ts:obj.nsecs-ts; %linspace(0, obj.nsecs-1/obj.fs, obj.nsecs*obj.fs);
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24 else
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25 x = obj.x;
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26 end
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27
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28 % return always a column vector
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29 if size(x,1) == 1
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30 x = x.';
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31 end
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32
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33 % add the toffset
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34 x = x + obj.toffset / 1000;
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35
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36 % We can have rounding errors for strange sample rates and Nsecs
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37 if length(x) < ly
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38 while length(x) < ly
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39 x = [x; x(end)+ts];
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40 end
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41 end
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42
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43 if length(x) ~= ly
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44 x = x(1:length(obj.y));
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45 end
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46
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47 if nargin == 2
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48 if strcmpi(idx, 'end')
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49 x = x(end);
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50 else
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51 x = x(idx);
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52 end
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53 end
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54
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55 end
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