[mapserver-users] WCS time support bugs

Armin Burger armin.burger at gmx.net
Mon Nov 3 15:10:38 PST 2008


Hi everybody

I wanted to test the time support functionality of WCS but this seems 
not to be working. There is an older bug report at
   http://trac.osgeo.org/mapserver/ticket/1856
but it seems this has not been fixed yet.

I use a PostGIS table to store the tileindex for the time series and as 
mentioned in the bug report there is still a wrong filter applied to the 
tileindex. Did anybody already try if the fix suggested in the ticket 
will work?


In addition, the time support of WCS does not have a time *range* 
similar to WMS-T "ows_timeextent" like
   "ows_timeextent" "2006-01-01/2006-06-01"

WCS requires to list every single date of the available coverages under 
"wcs_timeposition" which is not very feasible for longer time series. 
The bug report at Ticket #2487
    http://trac.osgeo.org/mapserver/ticket/2487

lists this problem as fixed, but when I use
    "wcs_timeposition" "2006-01-01/2006-06-01"

and request a coverage with a parameter '&TIME=2006-05-11', with 
MapServer v5.2 I still get the exception
   ...
   WCS server error. The coverage does not have a time position of
   2006-05-11.
   ...
Any idea if the definition has to be set in another way?

Best regards
Armin






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