[OpenLayers-Users] WMS ligthness vs. WFS overlay

[David Gadbois]

Andrea Maschio wrote:
> Hi all,
>         creating a sort of overlay of a wms with opacity set to 
> 0.something would be a good replacement for a WFS layer? I am having big 
> troubles displaying a big WFS layer so was thinking at this possibility.

It works fine.  There a couple of potential downsides:

o Any SLD_BODY parameter will run into HTTP GET length restrictions 
pretty quickly.

o With a WFS layer, the attributes for the features can be available 
client-side, whereas WMS requires a separate GetFeatureInfo round trip.

--David Gadbois