P-chart DRUPAL 7.In 6 easy steps

Step 1: Install Pchart Module
Step2: Install libraries
Step3: Download Pchart libraries and copy in sites all libraries
Step 4:See status Report to observe Pchart library as active
Step 5:
 $x=  chart_mine($a,$b,$c,$d);
//where $a to $d are abscissa values
  
Step 6: return $x.'
';

Function chart_mine Definition:

  
    
    $first_values =  $a; 
function chart_mine($a,$b,$c,$d){


    $second_values = $b;

    $third_values=$c;

    $fouth_values=$d;

    

    $name = "pChart";

    if ($path = libraries_get_path($name)) {

    include("{$path}/class/pData.class.php");

    include("{$path}/class/pDraw.class.php");

    include("{$path}/class/pImage.class.php");

    }

    

    // Create and populate the pData object.

    $myData = new pData();

    $myData->addPoints($first_values, "Total ISBN");

    $myData->addPoints($second_values, "Unique Isbn");

    

    $myData->addPoints($third_values, "Having Catalog");

    $myData->addPoints($fouth_values, "No Catalog");

    $myData->addPoints(array('TotalISBN',

    'Total Unique Isbn', 'Having Catalog',

    'No catalog',), "Day");

    

    // Add a description to one series.

    $myData->setSerieDescription("Days", "Day");

    

    // Define the abscissa axis labels serie.

    $myData->setAbscissa("Day");

    $myPicture = new pImage(1000, 250, $myData);

    $myPicture->setFontProperties(array("FontName" => "{$path}/fonts/Forgotte.ttf", "FontSize"   => 16,

    "R"=>$FontColorRo,"G"=>$FontColorRo,"B"=>$FontColorRo));

    

    $myPicture->setGraphArea(50, 30, 680, 200);  

    $myPicture->drawGradientArea(0, 0, 700, 230, 

    DIRECTION_VERTICAL, array("StartR" => 102, "StartG" => 178, "StartB" => 255, "EndR" =>    0, "EndG" => 0,

    "EndB" => 50, "Alpha" => 80));

    $myPicture->drawScale(array("CycleBackground" =>

    FALSE, "DrawSubTicks" => TRUE, "GridR" => 185, "GridG" => 240, "GridB" => 120, "GridAlpha" => 10));

    $settings = array("Gradient" => TRUE, "GradientMode" => GRADIENT_EFFECT_CAN);

    

    // Draw a bar chart.

    $myPicture->drawBarChart($settings);

    $myPicture->drawLegend(540, 12, array("Style" => LEGEND_BORDER, "Mode" => LEGEND_HORIZONTAL));

    $output = file_create_filename('example.png', 'sites/default/files/pictures');

    $myPicture->Render($output);

    $x= '
';

    return $x;  

  }

play with the classes to change color,font,backgrounds,etc.