Using tilecache_seed between some bounds

[Adrian Popa]

Hello everyone,

I'm new to tilecache and I've managed to get it running, but now, to
increase performance I would like to generate tiles between some zoom
levels so loading will be faster.

I've read the documentation and I'm trying to generate the tiles with
tilecache_seed.py. If I run it like this:

python tilecache_seed.py my_layer 1 6

... it starts crunching and generates loads of images. However, I've
read it doesn't generate those images using the bbox parameter in
tilecache.conf (so it's basically plotting the whole world). Now, I'm
trying to cache layers 1 - 5 (as defined in my conf file) within my bbox
- but the script finishes too quickly...

[root@terra tilecache]# python tilecache_seed.py my_layer 1 5 --bbox
"20.26,43.16,29.70,48.46"
###### (64, 64, 1), (64, 64, 1)
01 (000064, 000064) = (-0.0008 -0.0008 313086.0670 313086.0670) [0.0002s
: 2007.391/s] 1/0
###### (128, 128, 2), (128, 128, 2)
02 (000128, 000128) = (-0.0008 -0.0008 156543.0331 156543.0331) [0.0002s
: 2262.037/s] 1/0
###### (256, 256, 3), (256, 256, 3)
03 (000256, 000256) = (-0.0008 -0.0008 78271.5162 78271.5162) [0.0002s :
2436.929/s] 1/0
###### (512, 512, 4), (512, 512, 4)
04 (000512, 000512) = (-0.0008 -0.0008 39135.7577 39135.7577) [0.0002s :
2463.097/s] 1/0

Here is my layer configuration:
[my_layer]
type=WMS
debug=no
url=http://terra/fcgi-bin/mapserv?map=/var/www/html/map/my_base.map
layers=Judete,RuralSate,Rural,Urban,highway,sechighway,streets,buildings,GranitaJudete

bbox=20.26,43.16,29.70,48.46
spherical_mercator=true
levels=13
srs=EPSG:900913
size=256,256
extension=png
mime_type=image/png2
maxResolution=2445.9849046875
map_imagetype=agg
resolutions=2445.9849046875,1222.99245234375,611.496226171875,305.7481130859375,152.87405654296876,76.43702827148438,38.21851413574219,19.109257067871095,9.554628533935547,4.777314

266967774,2.388657133483887,1.1943285667419434,0.597164283
extent_type=loose


OpenLayers + WMS Layer pointing to tilecache.py works just fine, so I
must be missing some parameters...

Thanks,
Adrian

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[Adrian Popa]

Some javascript/style in this post has been disabled (why?)

Thank you Josh,

I was suspecting either my zoom levels were off, or my coordinates were wrong. I will convert them to spherical mercator and try again.

Thanks again for clarifying things.

Regards,
Adrian

P.S. - the bbox in lonlat coordinates inside my tilecache.conf works ok with OpenLayers - Should I change that too to spherical mercator coordinates? Or it doesn't matter?

Josh Livni wrote:

Hi Adrian,

Your layer setup has a confusing mix of geographic (lat/lon)�coordinates and spherical mercator projection. �Your projection is epsg:900913 which has units if meters, but your bounding box is not projected. �You should probably fix this, but definitely you'll need to pass tilecache_seed the bounding box in the correct coordinate system.

If you don't know how to project/transform your coordinates, note you �can do this in firebug or whatever using openlayers itself (for example: [ new OpenLayers.LonLat(20.26,43.16).transform(new OpenLayers.Projection('EPSG:4326'), new OpenLayers.Projection('EPSG:900913')) ]


Cheers,

�� -Josh

On Oct 22, 2009 10:36 PM, "Adrian Popa" <[hidden email]> wrote:

Hello everyone,

I'm new to tilecache and I've managed to get it running, but now, to
increase performance I would like to generate tiles between some zoom
levels so loading will be faster.

I've read the documentation and I'm trying to generate the tiles with
tilecache_seed.py. If I run it like this:

python tilecache_seed.py my_layer 1 6

... it starts crunching and generates loads of images. However, I've
read it doesn't generate those images using the bbox parameter in
tilecache.conf (so it's basically plotting the whole world). Now, I'm
trying to cache layers 1 - 5 (as defined in my conf file) within my bbox
- but the script finishes too quickly...

[root@terra tilecache]# python tilecache_seed.py my_layer 1 5 --bbox
"20.26,43.16,29.70,48.46"
###### (64, 64, 1), (64, 64, 1)
01 (000064, 000064) = (-0.0008 -0.0008 313086.0670 313086.0670) [0.0002s
: 2007.391/s] 1/0
###### (128, 128, 2), (128, 128, 2)
02 (000128, 000128) = (-0.0008 -0.0008 156543.0331 156543.0331) [0.0002s
: 2262.037/s] 1/0
###### (256, 256, 3), (256, 256, 3)
03 (000256, 000256) = (-0.0008 -0.0008 78271.5162 78271.5162) [0.0002s :
2436.929/s] 1/0
###### (512, 512, 4), (512, 512, 4)
04 (000512, 000512) = (-0.0008 -0.0008 39135.7577 39135.7577) [0.0002s :
2463.097/s] 1/0

Here is my layer configuration:
[my_layer]
type=WMS
debug=no
url=http://terra/fcgi-bin/mapserv?map=/var/www/html/map/my_base.map
layers=Judete,RuralSate,Rural,Urban,highway,sechighway,streets,buildings,GranitaJudete

bbox=20.26,43.16,29.70,48.46
spherical_mercator=true
levels=13
srs=EPSG:900913
size=256,256
extension=png
mime_type=image/png2
maxResolution=2445.9849046875
map_imagetype=agg
resolutions=2445.9849046875,1222.99245234375,611.496226171875,305.7481130859375,152.87405654296876,76.43702827148438,38.21851413574219,19.109257067871095,9.554628533935547,4.777314

266967774,2.388657133483887,1.1943285667419434,0.597164283
extent_type=loose


OpenLayers + WMS Layer pointing to tilecache.py works just fine, so I
must be missing some parameters...

Thanks,
Adrian

_______________________________________________
Tilecache mailing list
[hidden email]
http://openlayers.org/mailman/listinfo/tilecache

_______________________________________________
Tilecache mailing list
[hidden email]
http://openlayers.org/mailman/listinfo/tilecache