123 lines
No EOL
3.5 KiB
PHP
123 lines
No EOL
3.5 KiB
PHP
<?php
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/*
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* Copyright (c) 2010 by Justin Otherguy <justin@justinotherguy.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License (either version 2 or
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* version 3) as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* For more information on the GPL, please go to:
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* http://www.gnu.org/copyleft/gpl.html
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*/
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namespace Volkszaehler\View;
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require_once \Volkszaehler\BACKEND_DIR . '/lib/vendor/JpGraph/jpgraph.php';
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require_once \Volkszaehler\BACKEND_DIR . '/lib/vendor/JpGraph/jpgraph_scatter.php';
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require_once \Volkszaehler\BACKEND_DIR . '/lib/vendor/JpGraph/jpgraph_date.php';
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/*
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* JpGraph plotting
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*
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* @todo add caching
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* @todo unifiy axes of same unit
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*/
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class JpGraph extends View {
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protected $width = 800;
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protected $height = 600;
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protected $channels = array();
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protected static $colors = array('chartreuse', 'chocolate1', 'cyan', 'blue', 'lightcyan4', 'gold');
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protected $graph;
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public function __construct(Http\Request $request, Http\Response $response, $format) {
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parent::__construct($request, $response);
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$this->graph = new \Graph($this->width,$this->height);
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// Specify what scale we want to use,
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$this->graph->SetScale('datlin');
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$this->graph->legend->setPos(0.15,0.025, 'left', 'top');
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$this->graph->SetMarginColor('white');
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$this->graph->SetMargin(90,65,10,90);
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$this->graph->SetYDeltaDist(65);
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$this->graph->yaxis->SetTitlemargin(36);
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$this->graph->SetTickDensity(TICKD_DENSE, TICKD_SPARSE);
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$this->graph->xaxis->SetFont(FF_ARIAL);
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$this->graph->xaxis->SetLabelAngle(60);
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$this->graph->xaxis->SetLabelFormatCallback(function($label) { return date('j.n.y G:i', $label); });
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//$this->graph->img->SetAntiAliasing();
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}
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public function add(\Volkszaehler\Model\Channel $obj, $data = NULL) {
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$count = count($this->channels);
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$xData = $yData = array();
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foreach ($data as $reading) {
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$xData[] = $reading['timestamp']/1000;
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$yData[] = $reading['value'];
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}
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// Create the linear plot
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$plot = new \ScatterPlot($yData, $xData);
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$plot->setLegend($obj->getName() . ': ' . $obj->getDescription() . ' [' . $obj->getUuid() . ']');
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$plot->mark->SetColor(self::$colors[$count]);
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$plot->mark->SetFillColor(self::$colors[$count]);
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$plot->mark->SetType(MARK_DIAMOND);
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$plot->mark->SetWidth(1);
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$plot->SetLinkPoints(true, self::$colors[$count]);
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if ($count == 0) {
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$yaxis = $this->graph->yaxis;
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$this->graph->Add($plot);
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}
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else {
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$this->graph->SetYScale($count-1,'lin');
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$yaxis = $this->graph->ynaxis[$count-1];
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$this->graph->SetMargin(60,($count) * 65,10,90);
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$this->graph->AddY($count-1, $plot);
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}
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$yaxis->title->Set($obj->getUnit());
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$yaxis->title->SetFont(FF_ARIAL);
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$yaxis->SetColor(self::$colors[$count]);
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$yaxis->SetTitleMargin('50');
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$this->channels[] = $obj;
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}
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public function addException(\Exception $e) { echo $e; }
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public function addDebug() {}
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public static function factory(Http\Request $request, Http\Response $response) {
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}
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public function render() {
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// Display the graph
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$this->graph->Stroke();
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parent::render();
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}
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}
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?>
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