PHP Classes

SChemA: Perform statistical operations for chemistry

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Version License PHP version Categories
schema 1.0.0GNU General Publi...5PHP 5, Statistics, Math
Description 

Author

Jose Manuel

This class can perform statistical operations for chemistry.

It can take a set of values and perform several types of statistical operations. Currently it can:

- Average
- Standard deviation
- Calculate given percentile
- Scaled median absolute deviation
- Relative standard deviation
- Relative standard deviation (RSD) with robust estimators
- Percentage of root mean square (RMS) for a reference value (CRM, recovery,...).
- F and t distributions
- Relative uncertainty

Picture of Jose Manuel
  Performance   Level  
Name: Jose Manuel <contact>
Classes: 3 packages by
Country: Spain Spain

Level 1 Star

 Innovation award
Innovation award
Nominee: 2x

Example

<?php
require('functions/SchemA.php');
echo('Result for 5 spike of 1.5 mg/l with ammonium in wastewater');
echo('<br>');
$valores=array(1.4,1.51,1.42,1.96,1.36);
$estadisticaresultados= new SchemA();
$media=$estadisticaresultados->average($valores);
$sd=$estadisticaresultados->sd($valores);
$rsd=$estadisticaresultados->rsd($valores);
$perc=$estadisticaresultados->mypercentile($valores,50);
$mad=$estadisticaresultados->mad($valores);
$robustrsd=$estadisticaresultados->rsdrob($valores);
$rms=$estadisticaresultados->rms($valores,1.5);
$tcalc=$estadisticaresultados->getTcalc($valores,1.5);
$tobtenida=$estadisticaresultados->getInverseStudentT(95,$valores);
$incert=$estadisticaresultados->uncertainty($valores,1.5);
$sig=$estadisticaresultados->sigFig(10.63569,2);
print_r($valores);
echo('<br>');
echo($media.'/<-Average/ <br>');
echo($sd.'/<-Standard desviation/<br>');
echo($rsd.'/<-RSD/<br>');
echo($perc.'/<-Percentile 50/<br>');
echo($mad.'/<-MAD/<br>');
echo($robustrsd.'/<-Robust RSD/<br>');
echo($rms.'/<-RMS/<br>');
echo($tcalc.'/<-tcalc/<br>');
echo($tobtenida.'/<-tobte/<br>');
echo($incert.'/<-%Uncert/<br>');
echo($sig.'/<-significant figures transformation/<br>');
    ?>


  Files folder image Files (2)  
File Role Description
Files folder imagefunctions (1 file)
Plain text file exampleSChemAclass.php Example exampleSChemAclass

  Files folder image Files (2)  /  functions  
File Role Description
  Plain text file SchemA.php Class Statistical for Chemist

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