ChartDirector Ver 3.1 (PHP Edition Edition)

Log Scale Axis


  

This example illustrates setting an axis to log scale using Axis.setLogScale3.

Source Code Listing

[File: phpdemo/logaxis.php".]
<?php require_once("../lib/phpchartdir.php"); #The data for the chart $data = array(100, 125, 260, 147, 67); $labels = array("Mon", "Tue", "Wed", "Thu", "Fri"); #Create a XYChart object of size 200 x 180 pixels $c = new XYChart(200, 180); #Set the plot area at (30, 10) and of size 140 x 130 pixels $c->setPlotArea(30, 10, 140, 130); #Ise log scale axis if required if ($HTTP_GET_VARS["img"] == "1") { $c->yAxis->setLogScale3(); } #Set the labels on the x axis $c->xAxis->setLabels($labels); #Add a color bar layer using the given data. Use a 1 pixel 3D border for the #bars. $barLayer3Obj = $c->addBarLayer3($data); $barLayer3Obj->setBorderColor(-1, 1); #output the chart header("Content-type: image/png"); print($c->makeChart2(PNG)); ?>