[mapserver-users] layer with "truncated" symbols 2

Fri Mar 27 02:54:38 PDT 2020

Hi,

Your problem is on the client side. OpenLayers is now requesting tiles with 256x256 pixels. The middle tile has not any point inside its bounding box and therefore no symbols are rendered. Configure OpenLayers to do single tile requests.

http://dev.openlayers.org/examples/single-tile.html

Posts from gis.stackexchange dealing with this common issue with tiling clients:
https://gis.stackexchange.com/questions/198450/need-clarification-on-geoserver-meta-tile
https://gis.stackexchange.com/questions/87116/geoserver-cutting-off-symbols-close-to-tile-edges/87123#87123
https://gis.stackexchange.com/questions/83033/single-tiled-mapserver-wms-to-avoid-labels-and-features-cut-along-tile-borders-a

Duplicated labels is another version of the same issue
https://www.geowebcache.org/docs/current/concepts/metatiles.html

Using some tile cache program like MapProxy, MapCache of GeoWebCache between OpenLayers and WMS is another way to resolve the problem.

-Jukka Rahkonen-

-----Alkuperäinen viesti-----
Lähettäjä: mapserver-users <mapserver-users-bounces at lists.osgeo.org> Puolesta Leehan
Lähetetty: perjantai 27. maaliskuuta 2020 11.27
Vastaanottaja: mapserver-users at lists.osgeo.org
Aihe: Re: [mapserver-users] layer with "truncated" symbols 2

following your advice, I added quedalle classe :

...
LAYER
	NAME "nombre de cas"
	TYPE POINT
	PROJECTION
		"init=epsg:2154"
	END
	EXTENT 276838.0988 4584246.823 909596.998 8872270.142
	CONNECTIONTYPE POSTGIS
	CONNECTION blabla
	LABELITEM "nb_cas"
	CLASS
	 EXPRESSION "quedalle"
	 STYLE
		SYMBOL "circle"
		SIZE 150
		COLOR 0 0 0
	 END
	END
	CLASS
		STYLE 
			SYMBOL "cas"
			SIZE [ln_nb_cas]
			COLOR [couleur]
			OPACITY 70			
		END #fin style
		LABEL
			COLOR 0 0 0
			OUTLINECOLOR 255 255 255
			FONT "verdana-gras"
			TYPE truetype
			SIZE 8
		END
	END #fin class

And indeed I am using an attribute for red circle size.
But the result is still the same.
(I can't believe I am the first to experience this issue!) If it can help, here is a snap with the dummy class :
<http://osgeo-org.1560.x6.nabble.com/file/t372757/map.png> 

--
Sent from: http://osgeo-org.1560.x6.nabble.com/Mapserver-User-f4226646.html
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