WMS/WFS and (yearly) time-dependent data

[Stefan Schwarzer]

Thanks for the help. Hmmm.... not sure if I do really understand what  
you mean. It still feels a bit awkward in my brain....

One point that jumps in my mind is the "mypath/myfile" entry. This  
would be if I am working with shapefiles. But I am working with  
Postgis. So, how would I have to deal with that one then?

Merci!

Stef


> If your are serving layers as wms you could do soemthing like this :
>
>  - define a tileindex layer example:
>
>     LAYER
>     NAME "mylayer"
>     STATUS ON
> #    TYPE POLYGON
>     TYPE RASTER
>   METADATA
>     "DESCRIPTION" "mylayer"
>     "wms_title" "mylayer"
>     "wms_timeitem"  "time"
>     "wms_timeextent"  "1970/2006"
>      "WMS_SRS"   "epsg:4326"
>   END
>     SIZEUNITS PIXELS
>     TILEINDEX "tile_file"
>     TILEITEM "location"
>
>  - have a tile index that has at least 2 field (localtion for the  
> files, and a time field) :
>        location       time
>      mypath/myfile    2005
>       .....            ...
>
>  - doing a request of Getmap : something like
>    GetMap&Version=1.1.1&LAYERS=mylayer&Time=2005
>
>  Not sure if that fits your model.
>
> Best Regards
>
>
> Bart van den Eijnden (OSGIS) wrote:
>> I think you should be looking at tile-indexing for the TIME  
>> dimension. A
>> field in the dbf of the tile-index will probably state which  
>> shapefile
>> Mapserver needs to open for that specific year (and that specific  
>> theme).
>> I believe the WCS howto has some information on how to do this,  
>> but I have
>> no experience with this whatsoever:
>> http://mapserver.gis.umn.edu/docs/howto/WCSServerFormatHowTo
>> Best regards,
>> Bart
>> --
>> Bart van den Eijnden
>> OSGIS, Open Source GIS
>> http://www.osgis.nl
>> --------- Oorspronkelijk bericht --------
>> Van: Stefan Schwarzer <stefan.schwarzer at GRID.UNEP.CH>
>> Naar: MAPSERVER-USERS at LISTS.UMN.EDU <MAPSERVER-USERS at LISTS.UMN.EDU>
>> Onderwerp: [UMN_MAPSERVER-USERS] WMS/WFS and (yearly) time- 
>> dependent data
>> Datum: 21/02/07 09:44
>>> Hi,
>>>
>>> i read in a document ( http://mapserver.gis.umn.edu/docs/howto/  
>>> wms_time_support/view ) that there is a WMS/WFS-parameter one  
>>> can  specify for time dependent data. I am dealing mostly with  
>>> statistical  data sets, which are covering a period of 1970 to  
>>> 2006. So it should  be something like TIME=2004 to query a  
>>> specific year.
>>>
>>> For each variable and year there is a five-classes breakup.
>>>
>>> It is not clear to me how I should set-up my map file. I guess,  
>>> I  could on one hand just have 36 layers (for each year a layer)  
>>> - then  I wouldn't need the TIME parameter. But as I have some  
>>> 1000 files to  deal with, my map file would get pretty long...
>>>
>>> The other solution would be to have some kind of grouping  
>>> classes, so  that all my years would fit into one layer, but into  
>>> 36 classes.
>>>
>>> Or is there any kind of more "dynamic" solution?
>>>
>>> Thanks for any suggestions!
>>>
>>> Stef
>>>
>>>
>
>
> -- 
> ----------------------------------------------------------------
> Assefa Yewondwossen
> Software Analyst
>
> Email: assefa at dmsolutions.ca
> http://www.dmsolutions.ca/
>
> Phone: (613) 565-5056 (ext 14)
> Fax:   (613) 565-0925
> ----------------------------------------------------------------