[Tilecache] An error occurred: Current x value ... is too far from tile corner x ...

[Christoph Lingg]

Wow, thank you Josh and Dane! You really helped me a lot!

I haven't thought that you cannot set arbitrary values for maxExtends,  
that was the point. With your hint to set the maxExtents to the  
maximum values, everything goes fine! Thanks!

> var options = {
>    maxResolution: 156543.0339,
>    units: 'm',
>    projection: new OpenLayers.Projection("EPSG:900913"),
>    maxExtent: new OpenLayers.Bounds(-20037508.34, -20037508.34,  
> 20037508.34, 20037508.34)
> };



Am 16.11.2009 um 18:47 schrieb Josh Livni:

> Hi Christoph,
>
> Your tilecache config has incompatible bounds (bbox) and  
> resolutions.  One easy trick is see if your resolutions are evenly  
> divisible into your extent.  Obviously set your openlayers extent  
> (or resolutions, whichever you change) to match your tilecache  
> changes.
>
> Or if you don't want to fiddle with calculating compatible bbox/ 
> resolutions, and you don't care about a 'custom' maxExtent on your  
> map or in tilecache, then just use the whole globe (as defined by  
> spherical mercator, anyway).  For this, the easiest way is probably  
> just set spherical_mercator=true in your tilecache config, which  
> obviates the need for manually entering bbox or resolutions  
> parameters (and then you maybe set OpenLayers with the default  
> -20037508.34 style maxExtents, and maxResolution:auto)
>
>  -Josh
>
>
> On Mon, Nov 16, 2009 at 9:27 AM, Christoph Lingg  
> <christoph at lingg.eu> wrote:
> Thank you very much for your help, Dane!
>
> Unfortunately I still get the same error:
>  > An error occurred: Current x value 1050475.187500 is too far from
> tile corner x 1051768.941264
>
> Maybe it is because of my chosen bbox? Do I have to consider certain
> intervals or can I set it like I want?
>
> The other possibility I see is the projection. As I had problems, I
> chose the projection and settings that were exposed here in this
> working example:
> http://www.mail-archive.com/mapnik-users@lists.berlios.de/ 
> msg01550.html
>
> Does someone know where those errors come from and where i can search
> for more informations?
>
> Thanks,
> Christoph
>
> Am 15.11.2009 um 03:11 schrieb Dane Springmeyer:
>
> > Try putting:
> >
> > projection= +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0
> > +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs +over
> >
> > or
> >
> > projection= +init=epsg:900913
> >
> > in your tilecache.cfg
> >
> > Dane
> >
> > On Nov 14, 2009, at 10:19 AM, Christoph Lingg wrote:
> >
> >> (I think my last mail hasn't worked without registration, here
> >> again: )
> >>
> >> Hello everybody,
> >>
> >> our project just changed from GoogleMaps to OpenLayers and we are
> >> happy about being independent from proprietary solutions!
> >>
> >> But we also have to hurdle some new difficulties, and one of them
> >> seems to be a big challenge ;-) We are using the combination  
> Mapnik,
> >> TileCache and OpenLayers and I couldn't figure out how to stick  
> them
> >> together properly! The tiles are not displayed, but the error  
> message
> >>
> >>> An error occurred: Current x value 1079827.000000 is too far from
> >> tile corner x 1095796.660000
> >>
> >> is shown. Can anybody give me a hint how to go on? My TileCache and
> >> OpenLayers configs look like that:
> >>
> >>           var options = {
> >>               projection: new OpenLayers.Projection("EPSG:900913"),
> >>               displayProjection: new OpenLayers.Projection("EPSG:
> >> 4326"),
> >>               maxExtent: new OpenLayers.Bounds
> >> (923284,5940116,1164513,6148046),
> >>               resolutions:
> >>  
> [156543.0,78271.5,39135.75,19567.875,9783.9375,4891.96875,2445.984375,1222.9921875,611.49609375,305.748046875,152.874023438,76.4370117188,38.2185058594,19.1092529297,9.55462646484,4.77731323242,2.38865661621,1.19432830811,0.597164154053,0.298582077026
> >> ],
> >>               maxResolution: 156543.0,
> >>               units: 'm',
> >>               numZoomLevels: 19
> >>           };
> >>           this.map = new OpenLayers.Map(this.id, options);
> >>
> >>           var layer = new OpenLayers.Layer.WMS("wms",
> >>               "http://localhost:2280/tiles/tilecache.py", {
> >>                      layers: "wms",
> >>                      format: "image/png",
> >>                      "sphericalMercator": true
> >>                }
> >>              );
> >>
> >>           this.map.addLayer(layer);
> >>           this.map.zoomToMaxExtent();
> >>
> >> - - - - - - - - - - - - -
> >>
> >> type=Mapnik
> >> debug=on
> >> mapfile=/home/christoph/mapnik/malstube/map.xml
> >> bbox=923284,5940116,1164513,6148046
> >> resolutions
> >> =
> >>  
> 156543.0,78271.5,39135.75,19567.875,9783.9375,4891.96875,2445.984375,1222.9921875,611.49609375,305.748046875,152.874023438,76.4370117188,38.2185058594,19.1092529297,9.55462646484,4.77731323242,2.38865661621,1.19432830811,0.597164154053,0.298582077026
> >> maxResolution=156543.0
> >> srs=EPSG:900913
> >> spherical_mercator=true
> >> metaTile=yes
> >>
> >>
> >> Thank you for your help!
> >> Christoph
> >> _______________________________________________
> >> Tilecache mailing list
> >> Tilecache at openlayers.org
> >> http://openlayers.org/mailman/listinfo/tilecache
>
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