[Tilecache] cells not being calculated correctly for bounding box

[Andrew Wooster]

I'm not sure whether it'll help in your situation, but in the  
TileCache/Layer.py, try changing:

         x = int(round(x0))
         y = int(round(y0))
to:
         x = int(x0)
         y = int(y0)

That fixed some bounding box issues in my configuration.[0]

-Andrew

[0] I sent in a patch awhile ago, but got no response. *shrug*



On Feb 5, 2009, at 3:13 PM, Matt Bartolome wrote:
> Hi,
> I'm trying to seed a cache with a specific bounding box. Most of my
> layers honor the extent and seed perfectly however with certain layers
> tilecache does not calculate the cells correctly and always returns
> 0,0 which causes tilecache_seed.py to try to seed the entire bbox of
> the layer intead of my specified one in tilecache_seed.py.
>
> Here are some tilecache.cfg examples and tilecache_seed.py commands
> I'm using. Does anybody know what can cause this issue?
>
> #These are a couple that are going nuts:
> ################################
>
> [62971931]
> layers = 62971931
> mapfile = mapnik-config/62971931.xml
> metatile = true
> srs = epsg:2230
> metabuffer = 5
> bbox = 6296999.495,1930999.505,6309000.495,1939000.505
> debug = false
> type = Mapnik
>
> $ tilecache_seed.py 62971931 10 11
> "6296999.495,1930999.505,6309000.495,1939000.505"
> ###### (0, 0, 10), (1024, 683, 10)
> 10 (000000, 000000) = (6296999.4950 1930999.5050 6297011.2147
> 1931011.2247) [0.0002s : 1250.005/s] 1/28085
>
> [62971923]
> layers = 62971923
> mapfile = mapnik-config/62971923.xml
> metatile = true
> srs = epsg:2230
> metabuffer = 5
> bbox = 6296999.495,1922999.505,6309000.495,1931000.505
> debug = false
> type = Mapnik
>
> $  tilecache_seed.py 62971923 10 11
> "6296999.495,1922999.505,6309000.495,1931000.505"
> ###### (0, 0, 10), (1024, 683, 10)
> 10 (000000, 000000) = (6296999.4950 1922999.5050 6297011.2147
> 1923011.2247) [0.0002s : 1838.454/s] 1/28085
>
> [62971939]
> layers = 62971939
> mapfile = mapnik-config/62971939.xml
> metatile = true
> srs = epsg:2230
> metabuffer = 5
> bbox = 6124093,1761898.25,6637898,2175848.75
> debug = false
> type = Mapnik
>
> #These are fine
> #############
>
> $ tilecache_seed.py 62971939 10 11
> "6296999.495,1938999.505,6309000.495,1947000.505"
> ###### (345, 353, 10), (369, 369, 10)
> 10 (000345, 000353) = (6297201.1299 1939020.4814 6297702.8926
> 1939522.2441) [0.0895s : 11.112/s] 1/20
>
> [62731995]
> layers = 62731995
> mapfile = mapnik-config/62731995.xml
> metatile = true
> srs = epsg:2230
> metabuffer = 5
> bbox = 6124093,1761898.25,6637898,2175848.75
> debug = false
> type = Mapnik
>
> $ tilecache_seed.py 62731995 10 11
> "6272999.495,1994999.505,6285000.495,2003000.505"
> ###### (297, 465, 10), (321, 481, 10)
> 10 (000297, 000465) = (6273116.5205 1995217.9033 6273618.2832
> 1995719.6660) [0.0486s : 20.352/s] 1/20
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