[Tilecache] Pregenerated tiles

Alexandre Dube adube at mapgears.com
Wed Nov 5 16:44:10 EST 2008


Hi Guillaume,

  It was already set to :
   MAXSIZE 4096

  Is it to ok ?

Alexandre

Guillaume Sueur wrote:
> Hi Alexandre,
>
> I think your MAXSIZE is too short in your mapfile (main MAP section)
> It should allow images up to 1300 x 1300 to be drawn.
> Try to set it to 1500
>
> Regards,
>
> Guillaume
>
> Alexandre Dube a écrit :
>   
>> Hi Guillaume,
>>
>>  I get the following after around 30 seconds of running :
>> ...
>> ...
>> Cache miss: 196426.56206,5380743.03968,196878.117371,5381194.59499,
>> Tile: x: 15, y: 15, z: 4, time: 1.48284912109
>> 04 (000015, 000015) = (196426.5621 5380743.0397 196878.1174
>> 5381194.5950) [1.4831s : 4.280/s] 61/247
>> Traceback (most recent call last):
>>  File "./tilecache_seed.py", line 9, in <module>
>>    TileCache.Client.main()
>>  File "/home/mapgears/tilecache/TileCache/Client.py", line 108, in main
>>    seed(svc, base, layer, map(int, sys.argv[3:5]), map(float,
>> sys.argv[5].split(",")))
>>  File "/home/mapgears/tilecache/TileCache/Client.py", line 92, in seed
>>    svc.renderTile(tile)
>>  File "/home/mapgears/tilecache/TileCache/Service.py", line 138, in
>> renderTile
>>    data = layer.render(tile)
>>  File "/home/mapgears/tilecache/TileCache/Layer.py", line 429, in render
>>    image = self.renderMetaTile(metatile, tile)
>>  File "/home/mapgears/tilecache/TileCache/Layer.py", line 391, in
>> renderMetaTile
>>    data = self.renderTile(metatile)
>>  File "/home/mapgears/tilecache/TileCache/Layers/MapServer.py", line 51,
>> in renderTile
>>    mapImage = wms.draw()
>>  File "/home/mapgears/fgs-5.2.0/www/lib/python2.5/mapscript.py", line
>> 1363, in draw
>>    def draw(*args): return _mapscript.mapObj_draw(*args)
>> _mapscript.MapServerError: msDrawMap(): Image handling error. Failed to
>> draw layer named 'mos'.
>> msDrawRasterLayerGDAL(): Memory allocation error. Allocating work image
>> of size 1300x1300 failed.
>>
>>  Do you know what can cause this ?  I use metaTile=true with default
>> settings.
>>
>>  Thanks a lot for your help,
>>
>> Alexandre
>>
>> Guillaume Sueur wrote:
>>     
>>> cache miss is the normal message for non-existing tiles.
>>>
>>>
>>> Alexandre Dube a écrit :
>>>  
>>>       
>>>> I see,
>>>>
>>>>  I've got a lot of "cache miss" message and finally a  "Memory
>>>> allocation error".  I'll try to find out why.
>>>>
>>>> Thanks for the tip,
>>>>
>>>> Alexandre
>>>>
>>>> Guillaume Sueur wrote:
>>>>    
>>>>         
>>>>> that's what tilecache_seed.py does.
>>>>>
>>>>> See http://tilecache.org/readme.html#seeding-your-tilecache
>>>>>
>>>>> Guillaume
>>>>>
>>>>> Alexandre Dube a écrit :
>>>>>  
>>>>>      
>>>>>           
>>>>>> Hi Guillaume,
>>>>>>
>>>>>> I don't know what tileseed.py is.  What I would like to do is generate
>>>>>> all tiles for all resolutions of my raster layer in tilecache.  Is
>>>>>> there
>>>>>> a way to do this ?
>>>>>>
>>>>>> Many thanks,
>>>>>>
>>>>>> Alexandre
>>>>>>
>>>>>> Guillaume Sueur wrote:
>>>>>>           
>>>>>>             
>>>>>>> you mean the tileseed.py stuff ?
>>>>>>>
>>>>>>> Alexandre Dube a écrit :
>>>>>>>  
>>>>>>>               
>>>>>>>               
>>>>>>>> Hi list,
>>>>>>>>
>>>>>>>>   Is there a way, using command line, to pre-generate all tiles of a
>>>>>>>> layer in tilecache.cfg file ( with its resolutions and extent ) ?
>>>>>>>>
>>>>>>>>                         
>>>>>>>>                 
>>>>>>>                   
>>>>>>>               
>>>>>>             
>>>>>>             
>>>>     
>>>>         
>>>   
>>>       
>>     
>
>   


-- 
Alexandre Dubé
Mapgears
www.mapgears.com




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