[Cartoweb-users] How can this error be handled

[Pierre GIRAUD]

I didn't take a look at your code but the error you sent us isn't really 
explicit.
Probably, you have an "echo" or "print_r" somewhere that prevent the 
error to display correctly.

Are you able to check this and send back the real error message on this 
list ?

Regards

Pierre GIRAUD


VenuGopal Papasani wrote:

> Hi,
>   I have written a plugin which colors the polygon of my map.The 
> following is the code wriiteen for 
> c:\wamp\www\cartoweb3\plugins\ctr\server\ServerCtr.php.
>
>   Before this code there was no problem with the map the map is 
> displaying after writing this I was getting  the following exception.
>
>            I have also made one more changes previously my project 
> name is ctr  and i used to execute it as ctr.php.As 
> <http://ctr.php.As> my plugin name and my project names are same i 
> changed it to chittoor.
>
>          Now I want to know where the problem actually is.Is it in the 
> code or in Renaming my file names.No doubt i have renamed everything 
> required.
>
>            The Exception is
>
>
> *Fatal error*: Uncaught exception 'CartocommonException' with message 
> 'Error [2, Cannot modify header information - headers already sent by 
> (output started at 
> C:\wamp\www\cartoweb3\plugins\ctr\server\ServerCtr.php:123), 
> C:\wamp\www\cartoweb3\client\FormRenderer.php, 301] Backtrace: file: 
> UNKNOWN - UNKNOWN call: Common::cartowebErrorHandler(2, "Cannot modify 
> header information - headers already sent by (outp...", 
> "C:\wamp\www\cartoweb3\client\FormRenderer.php", 301, Array(1)) file: 
> 301 - C:\wamp\www\cartoweb3\client\FormRenderer.php call: 
> header("HTTP/1.1 500 Internal Server Error") file: 1032 - 
> C:\wamp\www\cartoweb3\client\Cartoclient.php call: 
> FormRenderer->showFailure(Object(SoapFaultWrapper)) file: 38 - 
> C:\wamp\www\cartoweb3\htdocs\client.php call: Cartoclient->main() 
> file: 3 - C:\wamp\www\cartoweb3\htdocs\chittoor.php call: 
> require_once("C:\wamp\www\cartoweb3\htdocs\client.php") ' in 
> C:\wamp\www\cartoweb3\common\Common.php:275 Stack trace: #0 [internal 
> function]: Common::cartowebErrorHandler(2, 'Cannot modify h... in 
> *C:\wamp\www\cartoweb3\common\Common.php* on line *275*
>
>
>            Here is my code
>
> ServerCtr.php
> ------------------
> <?php            
>    
> require_once(CARTOWEB_HOME . 'common/BasicTypes.php');
> require_once('DB.php');
>
> class ServerCtr extends ClientResponderAdapter
>     implements InitProvider
> {
>
>    
>     private $log;
>    
>     public function __construct()
>     {
>         parent::__construct();
>         $this->log =& LoggerManager::getLogger(__CLASS__);               
>     }
>
>    
>     public function getInit()
>     {
>         // Things to learn from the LayerInit
>     }
>   
>     public function getValues($id)
>     {
>         $values = array();
>         for($k=0;$k=1105;$k++)
>         {
>             $values[k] = rand(0,100);
>         }
>         return $values;
>     }
>    
>     public function initializeRequest($requ)
>     {
>         $msMapObj = $this->serverContext->getMapObj();
>        
>         $resultArray = $this->getValues($requ->dataElement_id);
>         $msLayer = $msMapObj->getLayerByName('chittoot');
>         $no_intervals = 5;
>         $color = "Reds";  //dont't think this is necessary
>         $this->colorMapFromData($resultArray, $msLayer, $no_intervals, 
> $color);   
>     }
>    
>     public function buildClassExpressions($numberOfIntervals,$resultArray)
>     {
>         $max_val = max($resultArray);
>         $min_val = min($resultArray);
>         $intervalLength = ceil(($max_val - $min_val)/$numberOfIntervals);
>         $idsPerClass = array();
>         foreach($resultArray as $id => $value)
>         {
>             $classNo = floor($value/$intervalLength);
>             $idsPerClass[$classNo] .= $id. ",";
>            
>         }
>        
>         $classes = array();
>         for($i=0;$i < $numberOfIntervals+1;$i++)
>         {
>             if ($classNo[$i])
>                 $classIds = substr($classNo[$i],o,-1);
>             else
>                 $classIds = "";
>                
>              $classes[$i] = "([".$idcol. "] IN '" . $classIds . 
> "')";              
>         }
>        
>         return $classes;       
>     }
>    
>     public function colorMapFromData($resultArray, $msLayer, 
> $numberOfIntervals, $colorScheme)
>     {
>         $expressions = 
> $this->buildClassExpressions($numberOfIntervals,$resultArray);
>         $r = 10;
>         $g = 10;
>         $b = 10;
>        
>         for($i=0;$i<numberOfIntervals;$i++)
>         {
>             $msClass = ms_newClassObj($msLayer);
>             $msClass->setexpression($expressions[$i]);
>             $msStyle = ms_newStyleObj($msClass);
>             $msStyle->color->setRGB($r,$g,$b);
>             $r = $r + 10;
>             $g = $g + 10;
>             $b = $b + 10;
>         }
>     }
> }
> ?>
>
>
>                      ctr.ini consists of
> id_col="ID"
>
>                              Please give me the solution how to solve 
> this problem.
>                             Thanks in Advance,
>
> Regards,
> Venu.
>
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>------------------------------------------------------------------------
>
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>  
>


-- 
_________________________________________________________
Pierre GIRAUD
Géomaticien, Analyste

Camptocamp France SAS
Savoie Technolac, BP 352
73377 Le Bourget du Lac, Cedex 

Tel : 00 33 4 79 44 44 93
Mail : pierre.giraud at camptocamp.com
http://www.camptocamp.com