array( '#BCE02E', '#E0642E', '#E0D62E', '#2E97E0', '#B02EE0', '#E02E75', '#5CE02E', '#E0B02E', '#000000', '#0022E0', '#726CB1', '#481A36', '#BAC658', '#127224', '#825119', '#238C74', '#4C489B', '#87C9BF', ), // Plot background color. 'bgColor' => '#84AD83', // The width of the plot. 'width' => 520, // The height of the plot. 'height' => 325, // Default X Axis label. If empty, label will be taken from the data. 'xLabel' => '', // Default Y Axis label. If empty, label will be taken from the data. 'yLabel' => '', // Data point label. If empty, label will be taken from the data. 'dataLabel' => '', ); /** * @var array Options that the user has specified. */ private $_userSpecifiedSettings = null; /** * Returns the settings array * * @return the settings array. */ public function getSettings() { return $this->_settings; } /** * Returns the data array * * @return the data array. */ public function getData() { return $this->_data; } /** * Constructor. Stores user specified options. * * @param array $data Data for the visualization * @param array $options Users specified options */ public function __construct($data, $options) { $this->_userSpecifiedSettings = $options; $this->_data = $data; } /** * All the variable initialization, options handling has to be done here. */ protected function init() { $this->_handleOptions(); } /** * A function which handles passed parameters. Useful if desired * chart needs to be a little bit different from the default one. */ private function _handleOptions() { $this->_dataPoints = array(); if (! is_null($this->_userSpecifiedSettings)) { foreach (array_keys($this->_userSpecifiedSettings) as $key) { $this->_settings[$key] = $this->_userSpecifiedSettings[$key]; } } if ($this->_settings['dataLabel'] == '') { $labels = array_keys($this->_data[0]); $this->_settings['dataLabel'] = $labels[0]; } } /** * Generate the visualization in SVG format. * * @return the generated image resource */ private function _svg() { $this->init(); $output = '' . "\n"; $output .= ''; return $output; } /** * Get the visualization as a SVG. * * @return the visualization as a SVG */ public function asSVG() { $output = $this->_svg(); return $output; } /** * Calculates the scale, horizontal and vertical offset that should be used. * * @param array $data Row data * * @return an array containing the scale, x and y offsets */ private function _scaleDataSet($data, $xField, $yField) { // Currently assuming only numeric fields are selected $coordinates = array(); foreach ($data as $row) { $coordinates[0][] = $row[$xField]; $coordinates[1][] = $row[$yField]; } for ($i = 0 ; $i < 2 ; $i++) { $maxC = ($i == 0) ? 500 : 320; if ( !is_numeric($coordinates[$i][0])) { $uniqueC = array_unique($coordinates[$i]); $countC = count(array_unique($coordinates[$i])); $map = $tmp = array(); foreach ($uniqueC as $uc) { $tmp[] = $uc; } for ($j = 0 ; $j < $countC ; $j++) { $map[$tmp[$j]] = 20 + $j * $maxC / $countC; } for ($j = 0 ; $j < count($coordinates[$i]) ; $j++) { $coordinates[$i][$j] = $map[$coordinates[$i][$j]]; } } else if (is_numeric($coordinates[$i][0])) { $maxC = max($coordinates[$i]); for ($j = 0 ; $j < count($coordinates[$i]) ; $j++) { if ($i == 0) { $coordinates[$i][$j] = 20 + 500 * $coordinates[$i][$j] / $maxC; } else { $coordinates[$i][$j] = 20 + 320 * (1 - $coordinates[$i][$j] / $maxC); } } } } return $coordinates; } /** * Prepares and return the dataset as needed by the visualization. * * @param array $data Raw data * @param int $color_number Start index to the color array * @param array $scale_data Data related to scaling * @param string $label Label for the data points * @return string the formatted array of data. */ private function _prepareDataSet($data, $color_number, $scale_data, $label) { $result = ''; // loop through the rows for ($i = 0 ; $i < count($data) ; $i++) { $index = $color_number % sizeof($this->_settings['colors']); $data_element = new PMA_SVG_Data_Point($scale_data[0][$i], $scale_data[1][$i], $data[$i][$label], $data[$i]); $options = array('color' => $this->_settings['colors'][$index], 'id' => $i); $this->_dataPoints[] = $data_element; $result .= $data_element->prepareRowAsSVG($options); $color_number++; } return $result; } } ?>