Advantage WFS vs. WMS

[Curtis W. Ruck]

for large sets of data WMS is much faster since its just generating and passing an image, whereas WFS is quite painful with large query sets.  Its also faster in web based clients to handle because javascript although nice in most web based WFS clients its very slow to drag them around (think openlayers).

Also with WMS and mapserver you can query by GET arguments i just can't remember how at the moment.  Its something like LAYER_0_FILTER='foo > 5 AND bar < 5' 

----- Original Message ----
From: Kai Behncke <kbehncke at IGF.UNI-OSNABRUECK.DE>
To: MAPSERVER-USERS at LISTS.UMN.EDU
Sent: Monday, January 29, 2007 1:10:13 AM
Subject: [UMN_MAPSERVER-USERS] Advantage WFS vs. WMS

Hello list,

I would like to know what the advantages of WFS in comparison to WMS are?

Some aspects are quite clear:

-It`s easier to design a WFS than a WMS. The way with SLD is not necessary.

- Poissibility to analyze and select WFS-Features with Filters (at WMS just a
spatial analyze with BBOX is possible)

- Tooltip-possibility

- Highlighfunction

Does anybody know other advantages WFS gives in comparison to WMS?



Thank you, Kai 

--
Dipl.-Geogr. Dipl.-Umweltwiss. Kai Behncke

Institut für Geoinformatik und Fernerkundung (IGF)
Universität Osnabrück
Kolpingstr. 7
49074 Osnabrück

Raum: 01/308
Tel.: +49 541 969-4450
E-Mail: mailto:kbehncke at igf.uni-osnabrueck.de 
Web:  http://www.igf.uni-osnabrueck.de




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