For good karma (think of it as a way to thank Thomas and others for tackling these questions) since you have a problem dataset handy, you could create a tiny one or two features sample, with one layer, and package all that in an archive with a README.txt and champion this change through the tickets you mentioned.
Thanks! -jeff -- Jeff McKenna MapServer Consulting and Training Services http://www.gatewaygeomatics.com/ On 2013-08-12 4:14 PM, Joseph Marlin wrote: > I am indeed using tile indices. I didn't think there would be any problem > with that step, but just to be sure I went ahead and checked. They all looked > ok, but I noticed that all the features that use tile indexes were the exact > features that aren't showing up- small roadways, highway shields, etc. This > was highly suspicious, and so I did a lot of digging. > > I recreated all the index shape files, this time using an old version of the > tile4ms and shptree utilities that I had fortunately saved when I generated > the map in 2011, and found that tileindex shapefiles were no much larger, and > the map was rendered correctly! > > So, all I can say for sure is that the current version of tile4ms and shptree > definitely did not work. This issue has been reported at least twice before > it seems, > http://trac.osgeo.org/mapserver/ticket/4259 > http://www.mail-archive.com/[email protected]/msg17207.html > > And I guess it is worth noting that this problem is still present in the > latest version (MapServer version 6.2.1 OUTPUT=PNG OUTPUT=JPEG SUPPORTS=AGG > SUPPORTS=FREETYPE SUPPORTS=ICONV INPUT=JPEG INPUT=SHAPEFILE). > > Thanks so so much for your help! Let me know if you need further info. > Joseph > > > > ----- Original Message ----- > From: "thomas bonfort" <[email protected]> > To: "Joseph Marlin" <[email protected]> > Cc: "MapserverList OSGEO" <[email protected]> > Sent: Saturday, August 10, 2013 3:18:03 AM > Subject: Re: [mapserver-users] The Case of the Disappearing Roads > > Another thing to check: are you using a tileindex to reference your > shapefiles, and if so, is the tileindex up-to-date (i.e. does it > reference all your shapefiles). > > -- > thomas > > On 9 August 2013 20:04, Joseph Marlin <[email protected]> wrote: >> Thanks Thomas for the idea. I think I understand what you're asking. We >> pre-render all our tiles though, so while the screenshots are indeed showing >> a javascript viewer, that viewer is simply loading the prerendered images, >> retrieved from tilecache. And I have made sure that it isn't TileCache >> storing old tiles. >> >> ----- Original Message ----- >> From: "thomas bonfort" <[email protected]> >> To: "Joseph Marlin" <[email protected]> >> Cc: "MapserverList OSGEO" <[email protected]> >> Sent: Friday, August 9, 2013 1:54:41 PM >> Subject: Re: [mapserver-users] The Case of the Disappearing Roads >> >> Joseph, >> are the images you are posting a direct result of a getmap request >> (i.e. with width=1007&height=454), or are they a screenshot of a >> javascript client that is doing tiled requests to mapserver? >> If those are tiled requests, are your layer/class minscale/maxscale >> settings set to the exact values of your requested resolutions (i.e. >> their might be some rounding errors in that case that make a >> scale-dependant class appear or disappear based on floating point >> rounding errors). >> >> -- >> thomas >> >> On 9 August 2013 19:03, Joseph Marlin <[email protected]> wrote: >>> The Case of the Disappearing Roads >>> >>> We create shapefiles with SQL querying world data that's been loaded into a >>> PostgreSQL database. A python script requests tiles from mapserver at >>> different zoom levels, and we generate the entire map like that. >>> >>> Now, at the sixth zoom level, level 3 roads (medium size roads) should be >>> rendered. However, they are actually rendered only in a small section of >>> the world, a box bounded by Toronto in the northwest, Cleveland in the >>> southwest, and the Atlantic in the east. Elsewhere, level 3 roads are not >>> rendered at all. >>> >>> As you can see in this image: http://i.imgur.com/6McvGOJ.png, the small >>> gray roads, level 3 roads, (and highway shields, for that matter) that are >>> visible on the top half suddenly stop being rendered by mapserver. >>> >>> In all the following more zoomed in levels, no roadways smaller than level >>> 2 are rendered at all anywhere, as you can see here: >>> http://i.imgur.com/8MTcPoi.png. I've verified that the shapefiles contain >>> the data on the smaller roads as I have viewed them just fine with QGIS, as >>> you can see here: http://i.imgur.com/S3W3Iy8.png >>> >>> I'm so confused as to what could possibly make roads disappear midway >>> through a level. If it was a problem with my mapfile, why would they show >>> up in part of Northeast US, but not anywhere else? Where do I even start >>> looking to solve this? >>> >>> Thanks so much! >>> >>> Additional info: >>> SRS: EPSG:900913 >>> Zoom levels: 19567.8792375, 9783.93961875, 4891.969809375, 2445.9849046875, >>> 1222.99245234375, 611.496226171875, 305.7481130859375, 152.87405654296876, >>> 76.43702827148438, 38.21851413574219, 19.109257067871095, >>> 9.554628533935547, 4.777314266967774, 2.388657133483887, >>> 1.1943285667419434, 0.5971642833709717, 0.29858214168548586 >>> Bounding box: -20037508.3427892,-20037508.3427892, >>> 20037508.3427892,20037508.3427892 >>> _______________________________________________ >>> mapserver-users mailing list >>> [email protected] >>> http://lists.osgeo.org/mailman/listinfo/mapserver-users > _______________________________________________ > mapserver-users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/mapserver-users > _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
