//-- FILE: function.cc //-- CODER: KUBO Takuya (kubo@ees.hokudai.ac.jp) //-- //-- (C)opyright 2000 KUBO Takuya (kubo@ees.hokudai.ac.jp). //-- All rights are reserved. //-- Do not modify without amending copyright, //-- distribute freely but retain this paragraph. //-- //-- CHANGE: Mon Feb 28 10:43:20 2000 // MODIFY: Sat Feb 5 17:58:44 2000 #include "ml.h" double function( Plist* p, ItrSample itr_sample ) { double y = ( *itr_sample )[ 0 ]; // the first column double x = ( *itr_sample )[ 1 ]; // the second column double h = 1.0 / ( 1.0 / p->Val( 2 ) + 1.0 / p->Val( 0 ) * pow( x, - p->Val( 1 ) ) ); // height of tree given by an allometric equation return - ( y - h ) * ( y - h ); // + ( term without p ) } |