mapserver WMS time and postgis.

[Denis Nadeau]

Hi,

Right now, I need to do some testing on the SQL commands, to be sure that
all possibilities are coded.  I'll keep you in the loop.

Denis

2006/10/6, Steve Lime <Steve.Lime at dnr.state.mn.us>:
>
> We need to get WCS time support and WMS time support in sync. Please
> include me on the bug...
>
> Steve
>
> >>> Yewondwossen Assefa <assefa at DMSOLUTIONS.CA> 10/04/06 2:54 PM >>>
> Denis,
>
>   Sorry for the delay.
>
>   Please enter a bug (WMS Server module) and code contribution and I
> will integrate it in mapserver.
>
> Thanks.
>
> Denis Nadeau wrote:
> > Hi,
> >
> > I would like to change some of the  code in mappostgis.c to reflect C
> > 5.2 Nearest Value instructions found in  WMS 1.1.1 specifications for
> > "TIME" parameter.
> >
>
> http://portal.opengeospatial.org/files/?artifact_id=1081&version=1&format=pdf
>
> >
> <
> http://portal.opengeospatial.org/files/?artifact_id=1081&version=1&format=pdf
> >
> >
> > Here what it says in the WMS 1.1.1 doc.
> >
> > "If a request does includes an imprecise dimensional value, and
> nearest
> > value behavior has been declared, then the server shall compute and
> send
> > the nearest available value. The value shall be rounded, not merely
> > truncated."
> >
> > Right now, mapserver is using date_trunc function to allow the user to
>
> > specify months, days, hours or minutes.  I think this could be
> enhanced
> > to get the nearest time value in Postgres.  For example,  NASA GES has
> 3
> > hourly data.  If the user  specify 2006-09-28T02:00  a blank image is
> > return, the user needs to be exact 2006-09-28T03:00.  Same thing with
> > 10-day data,  2006-09-03 will  return a  blank image.  User have to
> hit
> > the right date 2006-08-10, 2006-08-20, 2006-08-31, 2006-09-10,....
> >
> > Example
> > Tropical Rain data 3B42_V6_10_DAY:
> >
>
> http://g0hep12u.ecs.nasa.gov/mapserv-bin/wms_ogc?SERVICE=WMS&VERSION=1.1.1&REQUEST=Getmap&layers=bluemarble,TRMM_3B42_V6_10_DAY&BBOX=-180,-50,180,50&TIME=2005-08-20
>
> >
> <
> http://g0hep12u.ecs.nasa.gov/mapserv-bin/wms_ogc?SERVICE=WMS&VERSION=1.1.1&REQUEST=Getmap&layers=bluemarble,TRMM_3B42_V6_10_DAY&BBOX=-180,-50,180,50&TIME=2005-08-20
> >
> >
> > blank image
> >
>
> http://g0hep12u.ecs.nasa.gov/mapserv-bin/wms_ogc?SERVICE=WMS&VERSION=1.1.1&REQUEST=Getmap&layers=bluemarble,TRMM_3B42_V6_10_DAY&BBOX=-180,-50,180,50&TIME=2005-08-20T04:00
>
> >
> <
> http://g0hep12u.ecs.nasa.gov/mapserv-bin/wms_ogc?SERVICE=WMS&VERSION=1.1.1&REQUEST=Getmap&layers=bluemarble,TRMM_3B42_V6_10_DAY&BBOX=-180,-50,180,50&TIME=2005-08-20T04:00
> >
> >
> >
> > Let me know if this make sense to you.  I would be happy to contribute
>
> > some coding for this.
> >
> >
> > Denis
> >
> >
>
>
> --
> ----------------------------------------------------------------
> Assefa Yewondwossen
> Software Analyst
>
> Email: assefa at dmsolutions.ca
> http://www.dmsolutions.ca/
>
> Phone: (613) 565-5056 (ext 14)
> Fax:   (613) 565-0925
> ----------------------------------------------------------------
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/mapserver-dev/attachments/20061010/af673bc5/attachment.html