<? require('../LinearFit.php');
$oFit=new LinearFit; $oFit->SetData(array(array(0,1), array(1,3), array(2,-1), array(3,2)), array(array(0,3),array(0,4),array(6,-1),array(5,1))); $oFit->AddData(array(4,0), array(9,-2)); $aCoeffs=$oFit->Fit(); $aConf=$oFit->ConfInterval(0.95); $aRes=$oFit->GetValues(array(array(2,1), array(0,0), array(2,7))); if (php_sapi_name()=='cli') { for ($iEq=0; $iEq<count($aCoeffs[0]);$iEq++) { echo "Equation $iEq: y=a0"; for ($i=1; $i<count($aCoeffs); $i++) { echo "+a$i*x$i"; } echo "\n"; for ($i=0; $i<count($aCoeffs); $i++) { echo "a$i=" . $aCoeffs[$i][$iEq] . "±" . $aConf[$i][$iEq]. "\n"; } echo "r2=" . $oFit->R2()[$iEq] . "\n"; echo "x1=2 x2=2 -> y=" . $aRes[$iEq][0] . "\n"; } } else { for ($iEq=0; $iEq<count($aCoeffs[0]);$iEq++) { echo "Equation $iEq: y=a<sub>0</sub>"; for ($i=1; $i<count($aCoeffs); $i++) { echo "+a<sub>$i</sub>*x<sub>$i</sub>"; } echo "<br>"; for ($i=0; $i<count($aCoeffs); $i++) { echo "a<sub>$i</sub>=" . $aCoeffs[$i][$iEq] . "±" . $aConf[$i][$iEq] . "</br>"; } echo "r<sup>2</sup>=" . $oFit->R2()[$iEq] . "</br>"; echo "x<sub>1</sub>=2 x<sub>2</sub>=2 -> y=" . $aRes[$iEq][0] . "</br>"; } } ?>
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