[Mapserver-users] help with adding labels/annotation, please

[Haiyan Liu]

Hi all,

I had some problem with adding annotation to my map. I wrapped some
codes(see Dylan Keon's posting) posted in this list into my function(see
below). I created the map file. But what I got is just a blank image.
Can anyone tell me what is going wrong in my situation? Thanks.

// draw annotation on passed in image
// @param:  float $x, $y
// @param:  string $layer_name  -- annotation layer name
// @param:  string $text  -- for label
// $param:  reference of imageObj $image

function addLabel($x, $y, $layer_name, $text, &$image){
	$pt = ms_newLineObj();
	$pt->addXY($x, $y); 

	$shape = ms_newShapeObj(MS_SHAPE_LINE); 
	$shape->set('classindex', 0); 
	$shape->set('text', $text);  // assign the label 
	$shape->add($pt); 
	// note: $map is a member var in my map class
	$layer = $this->map->getLayerByName($layer_name); 
	$layer->set("status", 1);

	$layer->addFeature($shape);
	$layer->draw($image);

	//$shape->draw($this->map, $layer, $image); 

	$pt->free(); 
	$shape->free();	
}


#=============================================

LAYER
   NAME pin_text
   STATUS ON
   TYPE ANNOTATION
   FEATURE
   END
   CLASS
     LABEL
       TYPE TRUETYPE
       FONT arial
       SIZE 10
       COLOR 250 0 0
       POSITION UC
       FORCE TRUE
     END
   END
END

#=============================================