[Tilecache] Mapserver example

[James McManus]

In doc/README.txt there are two URL Visit examples. I'm able to get the second URL to work:

http://www.piedmontgeographic.com/cgi-bin/tilecache/tilecache.py/1.0.0/basemap/0/0/0.png

but when I try the first URL I get:

http://www.piedmontgeographic.com/cgi-bin/tilecache/tilecache.py?LAYERS=basemap&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&SRS=EPSG:4326&BBOX=-79.55334892, 35.50717788, -78.22326740, 36.26503708&WIDTH=256&HIGHT=256

An error occurred: can't find resolution index for 0.005196. Available resolutions are: 
[0.00274658203125, 0.001373291015625, 0.0006866455078125, 0.00034332275390625, 0.000171661376953125, 8.58306884765625e-05, 4.291534423828125e-05, 2.1457672119140625e-05, 1.0728836059570312e-05, 5.3644180297851562e-06]

I am using the MapServer example, in doc/EXAMPLE.txt, in my tilecache.cfg. That example does not include "resolutions", so why am I getting this message? Could it be WMS setting? In my mapfile I have the projection defined as:

PROJECTION
   "init=epsg:4326"
END

in tilecache.cfg I have it defined as srs=EPSG:4326. Is this correct? In each Layer I have basemap defined as:

     METADATA
        "wms_title" "basemap"
        "wms_srs" "epsg:4326"
     END

Is this correct. When I installed mapserver I specified --with-wmsclient, and also updated my python mapscript. I have a 64 bit machine, so my mapscripts are in /usr/lib64/python2.5/site-packages/. Do you know if this would cause a conflict?

Jim

I have provided further background information below.

Below is my info in tilecache.cfg:

[basemap]
type=MapServerLayer
layers=basemap
mapfile=/var/www/html/mapdata/rdubsmll.map
extension=png
bbox=-79.55334892, 35.50717788, -78.22326740, 36.26503708
debug=on

I can run the same mapfile through openlayers (without tilecache), with out setting maxResolution or resolutions, and it will show my data at a global resolution. I have also tried setting resolution in tilecache.cfg, but I get the same error message. I even have used the resolutions from the error output, which in openlayers produce expected results. I'm running mod_python, so when I make changes to my tilecache.cfg, I restart my server. I have tried numerous variations and I always get the same result.
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