time series representations in Mapserver

[Gerry Creager N5JXS]

Uli,

Thanks.  I rather like the 2nd option but I'll investigate both.

Regards,
Gerry

uli mueller [geOps] wrote:
> Gerry
> 
> In combination with PostGIS you get nice possibilities. I never liked
> date handling in Shape/dBase-Files, although it is possible too. However
> with a real db (MySQL might do it also) you get all functionality you'll
> ever need for dates.
> 
> For the MapServer side I used two approaches:
> 
> 1) set a filter on a layer. Manipulate it with JS or use the variable
> substitution through MapServer's CGI.
> The filter may look something like:
> FILTER "((datefield >=(('%startdate%')::date)) AND (datefield
> <(('%enddate% ')::date)))"
> See an (best viewed with IE:-( example at
> http://geops.info/korams/mapserver.php (map with yearly kills of
> domestic animals by lynx)
> 
> 2) setup your MapServer app as a WMS. Then you may use WMS time support
> (http://mapserver.gis.umn.edu/doc44/wms-time-support-howto.html).
> The second solution seems more transparent to me, but was available only
> since MS4.4. With WMS times it becomes really easy to set any time /
> time period you like. If you use chameleon as a client you may even use
> their TimeFilter widget to specify time according to OGC.
> Only problem was that anything in your layer's FILTER parameter will be
> overridden by the WMS time
> (http://mapserver.gis.umn.edu/bugs/show_bug.cgi?id=1261).
> 
> Before MS4.4 more solutions were proposed on the list, e.g.
> http://lists.gis.umn.edu/pipermail/mapserver-users/2003-December/008977.html 
> 
> 
> Gerry Creager N5JXS wrote:
> 
>> We're looking at several applications where we need some time-selection
>> capabilities.  Has anyone done this successfully with Mapserver, and if
>> so, might you share some tips?
>>
>> TIA,gerry
> 
> 
> 
> -- 
> geOps GeoInformatics
> D-79100 Freiburg

-- 
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