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Image_graph_dot or scatter

 
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beach_defender



Joined: 23 Jul 2007
Posts: 3
PostPosted: Mon Jul 23, 2007 9:26 am    Post subject: Image_graph_dot or scatter Reply with quote
Hi,
I'm trying to build a scattergram showing gross_margin against sales.

I can get the graph displaying with no trouble, but I cant get any links display.

As a trial I have the following style of code:

Code:

$result = $db->query($QueryString,true,"Error in scattergram query");
if ($result)
{
   $data = $db->getFieldsArray($result);
   $i = 0;
   while ($row = $db->fetch_array($result))
   {
      $GraphData[] = $row;
      $tag['id'] = $row['crmid'];
      $tag['alt'] = $row['crmid'];
      $tag['url'] = $site_URL;
      $PlotResult->addPoint($row['salescount'],$row['totalgm'],$tag);
//      $PlotResult->addPoint($row['salescount'],$row['averagegm'],array('url'=>'http://www.hpfm.com.au', 'alt'=> $row['crmid']));
//      
   }
}

//$DataSet1 = Image_Graph::factory('Image_Graph_Plot_Dot',array($ResultSet));
//Var_Dump::display($GraphData);
//Var_Dump::display($PlotResult);
//exit;
/**
 * Start preparing the graph.
 */


// create the graph
$Graph =& Image_Graph::factory('graph', array(600, 400));
// add a TrueType font
$Font =& $Graph->addNew('font', 'Verdana');
// set the font size to 11 pixels
$Font->setSize(8);

$Graph->setFont($Font);
$GraphTitle = Image_Graph::factory('title', array('Gross Margin Scatergram', 12));
$Plotarea = Image_Graph::factory('plotarea');
$Legend = Image_Graph::factory('legend');
$Legend->setPlotarea($Plotarea);       
$GraphSetup = Image_Graph::vertical($Plotarea,$Legend,90);

$Graph->add($GraphSetup);

// create the dataset
//$Dataset1 =& Image_Graph::factory('random', array(10, 2, 9, false));

// create the 1st plot as smoothed area chart using the 1st dataset
$Plot1 =& $Plotarea->addNew('scatter', $PlotResult);
$Marker1 =& Image_Graph::factory('Image_Graph_Marker_Diamond');
$Marker1->setFillColor('blue');
$Marker1->setLineColor('black');
// set a line color
$Plot1->setMarker($Marker1);
$Plot1->setTitle('Gross Margin vs Number of Sales');

// create the dataset
//$Dataset2 =& Image_Graph::factory('random', array(10, 10, 15, false));
// create the 1st plot as smoothed area chart using the 1st dataset
//$Plot2 =& $Plotarea->addNew('Image_Graph_Plot_Dot', array(&$Dataset2));
//$Marker2 =& Image_Graph::factory('Image_Graph_Marker_Plus');
//$Marker2->setFillColor('green');
//$Marker2->setLineColor('black');
//// set a line color
////$Plot2->setMarker($Marker2);
//$Plot2->setTitle('Extrovert');
//Var_Dump::display($Graph);
//ob_flush;
// output the Graph
$Graph->done();
?>


So essentially I want a link at each point.

As you can see I have used the sample code from http://pear.veggerby.dk/

but butchered it a bit.

I have a few questions:
1. Is it possible (I can see how without editing the PEAR package code at pesent)
2, If yes, abovem what incredibly silly thing must I have done?

3. If no, where can I make it happen?

Thanks for your help,

Barry
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beach_defender



Joined: 23 Jul 2007
Posts: 3
PostPosted: Thu Jul 26, 2007 8:58 am    Post subject: Reply with quote
Oh, I had hoped someone had an idea by now.

I will update this if I resolve it.

If anyone has thoughts, please let me know.

Thanks
Barry
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beach_defender



Joined: 23 Jul 2007
Posts: 3
PostPosted: Sat Jul 28, 2007 8:11 am    Post subject: Reply with quote
I have links working now with Image_Marker_Cross

I made the following changes to ..pear/Image/Graph/Marker/Cross.php

Replaced
Code:


$this->_canvas->polygon(array('connect' => true));



with

Code:

$this->_canvas->polygon(array('connect' => true, 'map_vertices' => true));




and moved it to before the calls to addVertex()

and then for each vertex,replaced

Code:


$this->_canvas->addVertex(array('x' => $x - $d1 - $d2, 'y' => $y - $d1 + $d2);


with

Code:

$this->_canvas->addVertex(array('x' => $x - $d1 - $d2, 'y' => $y - $d1 + $d2,
                                 'url'=>  $values['data']['url'],
                                 'id' => $values['data']['id'],
                                 'alt' => $values['data']['alt']));



I made changes to the setup as well I used 'dataset' not 'scatter'

I setup the graph as follows:

Code:

// create the graph
$canvas =& Image_Canvas::factory('png', array('width' => 600, 'height' => 400, 'usemap' => true));
$imagemap = $canvas->getImageMap();
$Graph =& Image_Graph::factory('graph', $canvas);
// add a TrueType font
$Font =& $Graph->addNew('font', 'Verdana');
// set the font size to 11 pixels
$Font->setSize(8);

$Graph->setFont($Font);
$GraphTitle = Image_Graph::factory('title', array('Gross Margin Scatergram', 12));
$Plotarea = Image_Graph::factory('plotarea');
$Legend = Image_Graph::factory('legend');
$Legend->setPlotarea($Plotarea);
$GraphSetup = Image_Graph::vertical($Plotarea,$Legend,90);

$Graph->add($GraphSetup);



I will try to update more later.

Barry
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