Re: [MAPSERVER-USERS] Mapserver bug when generating a tiled map with MapFish
Isn't there anyone to help me with this ? 2008/8/4 Faldor [EMAIL PROTECTED] Hi all, I use Mapserver with mapfish for the client side to display shapefiles which I generated using ogr2ogr. The problem is when I try to display a tiled layer (mapfish singleTile property set to 'false'). Some tiles are generated by mapserver entirely blank ! After a few researches I think it is due to the fact that those tiles are extended across the -180°/+180° line. For exemple, here is the imgext property from one of the calls to MapServer which render a blank tile : imgext=178.59375+-1.40625+271.40625+91.40625 Do you know of a way to fix this ? Regards, Pierre-Benoît -- View this message in context: http://www.nabble.com/Mapserver-bug-when-generating-a-tiled-map-with-MapFish-tp18813432p18813432.html Sent from the Mapserver - User mailing list archive at Nabble.com. ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [MAPSERVER-USERS] Mapserver bug when generating a tiled map with MapFish
Unfortunately there is no connection to internet on the platform I develop on. All is done localy. I will try to be more precise. I am trying to display a shapefile representing the whole world (it's a shapefile from Global Insight plus if it helps). I use mapfish without 'singleTile: true' so the layer is generated by tiles. There is no problem in the beggining when the map is zoomed to max extent. The problem occurs when I begin zooming in and trying to display America/Asia. One of the colums of tiles is drawn across the -180°/+180° longitude line, and those tiles are generated entirely blank (white, not even transparent). When I get the properties of the image (right-click on the blank tile - Properties) and I search in the Location of the image I can find : mapext=179.296875+44.296875+*225.703125* +90.703125imgext=179.296875+44.296875+*225.703125*+90.703125 So I guess the problem comes from that, MapServer doesn't recognise longitude greater than 180 or lower than -180. If I'm right I would appreciate any hint on how to handle this... Otherwise it may be a mapfish issue, maybe mapfish should always generate tiles with borders right on -180 / +180. This is the case at the beggining, lef tile has mapext=90+0+180+90 and right tile has mapext=-180+0+-90+90. But whenever I begin zooming in it goes awry, the border of tiles is no longer right on -180/+180 and some tiles are generated white by MapServer. If someone needs more informations I'm ready to give it. Best regards, PB 2008/8/6 Eric Lemoine [EMAIL PROTECTED] On Wed, Aug 6, 2008 at 2:28 PM, Pierre-Benoit Besse [EMAIL PROTECTED] wrote: Isn't there anyone to help me with this ? 2008/8/4 Faldor [EMAIL PROTECTED] Hi all, I use Mapserver with mapfish for the client side to display shapefiles which I generated using ogr2ogr. The problem is when I try to display a tiled layer (mapfish singleTile property set to 'false'). Some tiles are generated by mapserver entirely blank ! After a few researches I think it is due to the fact that those tiles are extended across the -180°/+180° line. For exemple, here is the imgext property from one of the calls to MapServer which render a blank tile : imgext=178.59375+-1.40625+271.40625+91.40625 Do you know of a way to fix this ? This is not enough information for anyone to help you. Could you provide a link or a web page to help people see what's going on? -- Eric ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [MAPSERVER-USERS] Mapserver bug when generating a tiled map with MapFish
Hi. Do you have maxExtent set in your map options? OpenLayers shouldn't request tiles outside the max extent. If it does it's a bug in OpenLayers. Another guestion: what layer type do you use? Layer.MapServer or Layer.WMS? If you use the former, make mapserver work as a WMS server and try using Layer.WMS to see if that fixes the problem. Again the ideal would be some example so that we con easily reproduce your problem. Eric 2008/8/6, Pierre-Benoit Besse [EMAIL PROTECTED]: Unfortunately there is no connection to internet on the platform I develop on. All is done localy. I will try to be more precise. I am trying to display a shapefile representing the whole world (it's a shapefile from Global Insight plus if it helps). I use mapfish without 'singleTile: true' so the layer is generated by tiles. There is no problem in the beggining when the map is zoomed to max extent. The problem occurs when I begin zooming in and trying to display America/Asia. One of the colums of tiles is drawn across the -180°/+180° longitude line, and those tiles are generated entirely blank (white, not even transparent). When I get the properties of the image (right-click on the blank tile - Properties) and I search in the Location of the image I can find : mapext=179.296875+44.296875+*225.703125* +90.703125imgext=179.296875+44.296875+*225.703125*+90.703125 So I guess the problem comes from that, MapServer doesn't recognise longitude greater than 180 or lower than -180. If I'm right I would appreciate any hint on how to handle this... Otherwise it may be a mapfish issue, maybe mapfish should always generate tiles with borders right on -180 / +180. This is the case at the beggining, lef tile has mapext=90+0+180+90 and right tile has mapext=-180+0+-90+90. But whenever I begin zooming in it goes awry, the border of tiles is no longer right on -180/+180 and some tiles are generated white by MapServer. If someone needs more informations I'm ready to give it. Best regards, PB 2008/8/6 Eric Lemoine [EMAIL PROTECTED] On Wed, Aug 6, 2008 at 2:28 PM, Pierre-Benoit Besse [EMAIL PROTECTED] wrote: Isn't there anyone to help me with this ? 2008/8/4 Faldor [EMAIL PROTECTED] Hi all, I use Mapserver with mapfish for the client side to display shapefiles which I generated using ogr2ogr. The problem is when I try to display a tiled layer (mapfish singleTile property set to 'false'). Some tiles are generated by mapserver entirely blank ! After a few researches I think it is due to the fact that those tiles are extended across the -180°/+180° line. For exemple, here is the imgext property from one of the calls to MapServer which render a blank tile : imgext=178.59375+-1.40625+271.40625+91.40625 Do you know of a way to fix this ? This is not enough information for anyone to help you. Could you provide a link or a web page to help people see what's going on? -- Eric ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
