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