[mapserver-users] WMS TIME using postgis time index, problem with GetFeatureInfo

[Yewondwossen Assefa]

Maarten,


Maarten Plieger wrote:
> Hi All,
> 
> I use a postgis database filled with files and their corresponding 
> dates. This makes it possible to use WMS Time requests. This works very 
> well, except for the GetFeatureInfo request. When I do GetFeatureInfo on 
> a certain location I get this message:
> "msSHPOpenFile(): Unable to acces file.
> (/mapdata/RADNL25TIME)"
> 
> The data is raster data, and has nothing to do with Shapes...
> 
> This is a part of the mapfile of the layer:
> 
> {...}
> TILEITEM "path" #path is a column in postgis table with varchar of the 
> filepath to each image
> TILEINDEX "RADNL25TIME"
> 
> METADATA
>        "wms_timeextent"     
> "2008-10-24T00:00:00Z/2008-10-24T12:00:00Z/PT5M"
>        "wms_timeitem"         "datetime" #datetime is a column in 
> postgis table of type timestamp
>        "wms_timedefault"     "2008-10-24T00:00:00Z"
> {...}
> END
> {...}
> 
> Is this a known bug, or am I doing something wrong?
> When I use a file directly instead of the PostGIS table, GetFeature info 
> returns the correct results.
> 

Maarten,

  Your request of GetFeatureInfo ends up being equivalent of a query on 
a  tiled index raster layer. From what I can see, Mapserver seems to be 
currently limited to only be able to do queries when the tiled layer is 
a shape file.   I have raised an enhancement bug on this 
(http://trac.osgeo.org/mapserver/ticket/2796) but I am not sure how easy 
It would be to support all data types in this case. (We should at least 
be able to send a meaningful message to the user explaining the limitation).
Meanwhile, you might want to consider making your layer non queryable.

Best Regards



-- 
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Assefa Yewondwossen
Software Analyst

Email: assefa at dmsolutions.ca
http://www.dmsolutions.ca/

Phone: (613) 565-5056 (ext 14)
Fax:   (613) 565-0925
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