Marsyas
0.6.0-alpha
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00001 /* 00002 ** Copyright (C) 1998-2005 George Tzanetakis <gtzan@cs.uvic.ca> 00003 ** 00004 ** This program is free software; you can redistribute it and/or modify 00005 ** it under the terms of the GNU General Public License as published by 00006 ** the Free Software Foundation; either version 2 of the License, or 00007 ** (at your option) any later version. 00008 ** 00009 ** This program is distributed in the hope that it will be useful, 00010 ** but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 ** GNU General Public License for more details. 00013 ** 00014 ** You should have received a copy of the GNU General Public License 00015 ** along with this program; if not, write to the Free Software 00016 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00017 */ 00018 00019 #include "StandardDeviation.h" 00020 #include "../common_source.h" 00021 00022 using namespace std; 00023 using namespace Marsyas; 00024 00025 StandardDeviation::StandardDeviation(mrs_string name): MarSystem("StandardDeviation",name) 00026 { 00027 } 00028 00029 StandardDeviation::~StandardDeviation() 00030 { 00031 } 00032 00033 MarSystem* 00034 StandardDeviation::clone() const 00035 { 00036 return new StandardDeviation(*this); 00037 } 00038 00039 void 00040 StandardDeviation::myUpdate(MarControlPtr sender) 00041 { 00042 (void) sender; //suppress warning of unused parameter(s) 00043 MRSDIAG("StandardDeviation.cpp - StandardDeviation:myUpdate"); 00044 00045 ctrl_onSamples_->setValue((mrs_natural)1, NOUPDATE); 00046 ctrl_onObservations_->setValue(ctrl_inObservations_, NOUPDATE); 00047 ctrl_osrate_->setValue(ctrl_israte_, NOUPDATE); 00048 00049 obsrow_.create(ctrl_inSamples_->to<mrs_natural>()); 00050 00051 inObservations_ = ctrl_inObservations_->to<mrs_natural>(); 00052 00053 // Add prefix to the observation names. 00054 mrs_string inObsNames = ctrl_inObsNames_->to<mrs_string>(); 00055 ctrl_onObsNames_->setValue(obsNamesAddPrefix(inObsNames, "Std_"), NOUPDATE); 00056 00057 } 00058 00059 void 00060 StandardDeviation::myProcess(realvec& in, realvec& out) 00061 { 00062 mrs_natural t,o; 00063 //checkFlow(in,out); 00064 out.setval(0.0); 00065 for (o=0; o < inObservations_; o++) 00066 { 00067 for (t = 0; t < inSamples_; t++) 00068 { 00069 // Calculate mean 00070 obsrow_(t) = in(o,t); 00071 } 00072 out(o,0) = obsrow_.std(); 00073 } 00074 00075 // VERY INEFFICIENT - LOTS OF MEMORY ALLOCATION AND COPYING 00076 // out = in.stdObs(); 00077 }