Hi everyone,
I am currently doing a bar chart but I having an error message of this "Your manually specified scale and ticks is not correct. The scale seems to be too small to hold any of the specified tick marks".
Here's the code:
<?php
$gpa11=$_REQUEST['gpa11'];
$gpa12=$_REQUEST['gpa12'];
$gpa21=$_REQUEST['gpa21'];
$gpa22=$_REQUEST['gpa22'];
$gpa31=$_REQUEST['gpa31'];
$gpa32=$_REQUEST['gpa32'];
$gpa41=$_REQUEST['gpa41'];
$gpa42=$_REQUEST['gpa42'];
$gpa51=$_REQUEST['gpa51'];
$gpa52=$_REQUEST['gpa52'];
?>
<?php // content="text/plain; charset=utf-8"
require_once ('jpgraph/jpgraph.php');
require_once ('jpgraph/jpgraph_bar.php');
$data1y=array($gpa11,$gpa21,$gpa31,$gpa41, $gpa51);
$data2y=array($gpa12,$gpa22,$gpa32,$gpa42, $gpa52);
// Create the graph. These two calls are always required
$graph = new Graph(350,200,'auto');
$graph->SetScale("textlin");
$theme_class=new UniversalTheme;
$graph->SetTheme($theme_class);
$graph->yaxis->SetTickPositions(array(0,30,60,90,120,150), array(15,45,75,105,135));
$graph->SetBox(false);
$graph->ygrid->SetFill(false);
$graph->xaxis->SetTickLabels(array('Year 1','Year 2','Year 3','Year 4','Year 5'));
$graph->yaxis->HideLine(false);
$graph->yaxis->HideTicks(false,false);
// Create the bar plots
$b1plot = new BarPlot($data1y);
$b2plot = new BarPlot($data2y);
// Create the grouped bar plot
$gbplot = new GroupBarPlot(array($b1plot,$b2plot));
// ...and add it to the graPH
$graph->Add($gbplot);
$b1plot->SetColor("white");
$b1plot->SetFillColor("#cc1111");
$b2plot->SetColor("white");
$b2plot->SetFillColor("#11cccc");
$graph->title->Set("GPA Performance Graph");
// Display the graph
$graph->Stroke();
?>
What should be done to correct the problems? Please advice