57 lines
1.8 KiB
PHP
57 lines
1.8 KiB
PHP
<?php
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use PhpOffice\PhpSpreadsheet\Spreadsheet;
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require __DIR__ . '/../../Header.php';
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$helper->log('Estimates the standard deviation based on a sample of selected database entries.');
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// Create new PhpSpreadsheet object
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$spreadsheet = new Spreadsheet();
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$worksheet = $spreadsheet->getActiveSheet();
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// Add some data
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$database = [['Tree', 'Height', 'Age', 'Yield', 'Profit'],
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['Apple', 18, 20, 14, 105.00],
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['Pear', 12, 12, 10, 96.00],
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['Cherry', 13, 14, 9, 105.00],
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['Apple', 14, 15, 10, 75.00],
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['Pear', 9, 8, 8, 76.80],
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['Apple', 8, 9, 6, 45.00],
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];
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$criteria = [['Tree', 'Height', 'Age', 'Yield', 'Profit', 'Height'],
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['="=Apple"', '>10', null, null, null, '<16'],
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['="=Pear"', null, null, null, null, null],
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];
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$worksheet->fromArray($criteria, null, 'A1');
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$worksheet->fromArray($database, null, 'A4');
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$worksheet->setCellValue('A12', 'The estimated standard deviation in the yield of Apple and Pear trees');
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$worksheet->setCellValue('B12', '=DSTDEV(A4:E10,"Yield",A1:A3)');
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$worksheet->setCellValue('A13', 'The estimated standard deviation in height of Apple and Pear trees');
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$worksheet->setCellValue('B13', '=DSTDEV(A4:E10,2,A1:A3)');
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$helper->log('Database');
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$databaseData = $worksheet->rangeToArray('A4:E10', null, true, true, true);
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var_dump($databaseData);
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// Test the formulae
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$helper->log('Criteria');
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$criteriaData = $worksheet->rangeToArray('A1:A3', null, true, true, true);
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var_dump($criteriaData);
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$helper->log($worksheet->getCell('A12')->getValue());
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$helper->log('DSTDEV() Result is ' . $worksheet->getCell('B12')->getCalculatedValue());
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$helper->log('Criteria');
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$criteriaData = $worksheet->rangeToArray('A1:A3', null, true, true, true);
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var_dump($criteriaData);
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$helper->log($worksheet->getCell('A13')->getValue());
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$helper->log('DSTDEV() Result is ' . $worksheet->getCell('B13')->getCalculatedValue());
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