[ka-Map-users] Creating Maps on Fly

[Paul Spencer]

Hi Ghulam,

not sure if anyone responded ... we were all pretty busy with FOSS4G :)

To get this to work will require some changes to the PHP files that  
come with ka-Map.  Essentially, ka-Map uses three PHP files:

config.php - not used directly, but contains all the configuration  
information

init.php - uses config.php, returns javascript to kaMap that tells it  
about the map files and layers so that the user interface can be set up

tile.php - uses config.php and dynamically returns tile images from  
the cache, or creates the tiles if they are not in the cache

You will need to modify init.php and tile.php to achieve your goals.   
Hopefully you would need only small changes though.

Cheers

Paul

On 14-Sep-06, at 4:05 AM, Ghulam Muqtada wrote:

> Hi All,
>
> I am new to ka-maps and facing some problems can any body help me  
> creating maps on fly, may I ignore the maps files and use my own  
> mapscript instead, my mapscript code works fine and also draw maps,  
> how can I handle my own mapscript to config.php or to init.php, ,my  
> code is as follow.
>
> <?php
> include_once('admin/super/classes/Connection.php');
> if (!extension_loaded("MapScript"))
>  dl('php_mapscript_48.'.PHP_SHLIB_SUFFIX);
>
> class MapHandler
> {
>  function getMyMaps($user_id)
>  {
> $con= new Connection();
> $con->connect();
> $con->selectDatabase("blot");
> $myCon=$con->getConnectionReference();
> $count=0;
> $userMap=array();
> $userMaps=array();
> $qry="SELECT * from maps where user_id=".$user_id;
> $rs=mysql_query($qry ,$myCon) or die(mysql_error());
>   if(mysql_num_rows($rs) > 0 )
>   {
>   while($row=mysql_fetch_array($rs))
>   {
>  $lot_id=$row['lot_id'];
>  $lot_name=$row['lot_name'];
>  $lot_width=$row['image_width'];
>  $lot_height=$row['image_length'];
>  $lot_image="admin".$row['image_location'];
>  $myMap= ms_newMapObj("mapTest.map");
>  $myMap->set("name","lot".++$count);
>  $myMap->set("width",$lot_width);
>  $myMap->set("height",$lot_height);
>  $myMap->setExtent(0.0,0.0,$lot_width,$lot_height);
>  $myMap->selectOutputFormat("png");
>  $myMap->outputformat->set("transparent", MS_ON );
>  $myLayer = ms_newLayerObj($myMap);
>  $myLayer->set( "name", "Lot");
>  $myLayer->set( "type", MS_LAYER_RASTER);
>  $myLayer->set( "status", MS_ON);
>  $myLayer->set( "data",$lot_image);
>  $myMap->web->set("imagepath","/ms4w/tmp/ms_tmp/kacache/");
>  $myMap->web->set("imageurl","/ms_tmp/kacache/");
>  $myMap->reference->set("width",($lot_width/4));
>  $myMap->reference->set("height",($lot_height/4));
>  $myMap->reference->set("image",$lot_image);
>  $myMap->reference->set("status",MS_ON);
>  //$myMap->reference->setextent(0, 0, 100,150);
>  $rect= ms_newRectObj();
>  $rect->setextent(0.0, 0.0, ($lot_width/4), ($lot_height/4));
>  $userMaps['plot'.$count++] = $myMap;
> }
>   $szMap = 'plot0';
>   //$aszMapFiles=$userMaps;
>   return $userMaps;
>   }
>   }
> }
> ?>
>
> can I handover $userMaps to ka-map to deal with these maps only ,  
> what i have to do,
>
> Regards
> Ghulam Muqtada
>
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> _______________________________________________
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> ka-Map-users at lists.maptools.org
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+-----------------------------------------------------------------+
|Paul Spencer                           pspencer at dmsolutions.ca   |
+-----------------------------------------------------------------+
|Chief Technology Officer                                         |
|DM Solutions Group Inc                 http://www.dmsolutions.ca/|
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