TR : [rosa-users] php-Rosa applet tile indexing

[Frank Broniewski]

Frank Broniewski
Musée National d'Histoire et d'Art
Section Préhistoire / Projet EPC
    Tél: +352 260 281-21
241, Rue de Luxembourg
L-8077 Bertrange


-----Message d'origine-----
De : Frank Broniewski [mailto:frank.broniewski at mnha.etat.lu] 
Envoyé : Mittwoch, 26. Januar 2005 09:23
À : 'Palanisamy, Giri'
Objet : RE : [rosa-users] php-Rosa applet tile indexing


Hello
 You cannot call a group like this. There is the possibility of getting all
group names in your mapfile with the function getAllGroupNames(). With the
function getLayersIndexByGroup($groupname) you get all layers associated to
a group by index. Then you can cycle through your layers and turn them on or
off. I will post the code for my legendcreation, so you can see above code
in action :-)

function LayerControl(&$MapObj) {
/*
Creates the Legend with Icons depending on the mapfile of the mapserver and
the selection of the user Which Layer can be accessed by what usertype can
be defined in the mapfile by using the "access" Keyword in the metatags
Legend is arranged in Groups, which are defined in the mapfile */
  $MapLayers = $MapObj->getAllLayerNames();
  $MapGroups = $MapObj->getAllGroupnames();
  sort($MapGroups); // sorts GroupLayers from Mapfiles alphabeticly for
display

  foreach($MapGroups as $groupname) {
    echo "<p><span
class=\"legendgroup\">".htmlentities($groupname)."</span><br>\n";
    $LayerObjIndex = $MapObj->getLayersIndexByGroup($groupname);
    foreach($LayerObjIndex as $layerindex) {
      $LayerObj = $MapObj->getLayer($layerindex);
      if ($LayerObj->getMetaData("access") <= $_SESSION['status']) { // Here
we check, which layer can be seen by which usertype
        echo "<input type=\"checkbox\" name=\"layer[]\"
value=\"".$LayerObj->name."\" ".ReturnMapStatus($LayerObj->name,
$MapObj).">: ".htmlentities($LayerObj->name)."<br>\n";
        if (isset($_POST['ShowLegend'])) { // If user wants to see the
icons, then create them
          for ($i = 0; $i < $LayerObj->numclasses; $i++) {
            $ClassObj = $LayerObj->GetClass($i);
            $LegendiconObj = $ClassObj->createLegendIcon(10, 10);
            $iconpath = $MapObj->web->imagepath;
            $webpath = $MapObj->web->imageurl;
            $ClassObjName = DelSpecChars($ClassObj->name);
            $iconpath = $iconpath.$ClassObjName.$i.".png";
            $iconurl = $webpath.$ClassObjName.$i.".png";
            $LegendiconObj->saveImage($iconpath);
            echo "<img class=\"legendimg\" src=\"".$iconurl."\"
alt=\"Legendicon\"> <span
class=\"legendfont\">".htmlentities($ClassObj->name)."</span><br>\n";
          } // for numclasses
        } // if showlegend
      } // if status
    } // foreach layer
    echo "</p>\n";
  } // foreach group
}

                                                      
Frank Broniewski
Musée National d'Histoire et d'Art
Section Préhistoire / Projet EPC

-----Message d'origine-----
De : rosa-users-bounces at lists.maptools.org
[mailto:rosa-users-bounces at lists.maptools.org] De la part de Palanisamy,
Giri Envoyé : Dienstag, 25. Januar 2005 23:04 À :
rosa-users at lists.maptools.org Objet : [rosa-users] php-Rosa applet tile
indexing



Hi,

I am able to customize the GMap php-rosa sample app. I have the following
layer in my .map file, I am using TILEINDEX for 8km and 1km resolution and
the top level 50 km I am using tif file. In by JBox I used to call this
layer by the GROUP " MOD12Q1" and it worked, now in the php application how
do I call this group? Is there similar method call like getlayerbyname() for
LAYER GROUP?

 $poLayer = $gpoMap->getlayerbyname("IGBP_MOD12Q1");
 $poLayer->set("status", 1);

Returns 
Warning: getLayerByName failed for : IGBP_MOD12Q1 in
f:\Inetpub\wwwroot\gmap\htdocs\gmap75.inc.php on line 116

Any suggestion would be highly appreciated 
Thanks!
Giri

Here is my layer snippet from the .map file

LAYER
  NAME IGBP_50k
  GROUP IGBP_MOD12Q1
  TYPE RASTER
  DATA LL_SDS01GR50.tif
  STATUS ON
  MINSCALE 1490000
  MAXSCALE 190000000
  #MAXSCALE 10000
  PROJECTION
  	"proj=longlat"
  	"ellps=GRS80"
  	"no_defs"  	
  END
END
LAYER
  NAME IGBP_8K
  GROUP IGBP_MOD12Q1
  TYPE RASTER
  STATUS ON
  TILEINDEX "modis_8km"
  TILEITEM "Location"
  MINSCALE 29000000
  MAXSCALE 150000000
  PROJECTION
  	"proj=longlat"
  	"ellps=GRS80"
  	"no_defs"
  	"proj=eqc"  	
  END

END
LAYER
  NAME IGBP_1K
  GROUP IGBP_MOD12Q1
  TYPE RASTER
  STATUS ON
  TILEINDEX "modis_1km"
  TILEITEM "Location"
  #MINSCALE 8000000
  MAXSCALE 30000000
  PROJECTION
  	"proj=longlat"
  	"ellps=GRS80"
  	"no_defs"
  	"proj=eqc"  	
  END

END

Giri

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