<?
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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