[Qgis-user] how to know if wms allows point sampling of the data

[Goyo]

2010/11/29 M.E.Dodd <m.e.dodd at open.ac.uk>:
> When searching for a suitable wms layer is there some key phrase or word
> that tells whether or not you can do anything other than just view the
> data. For example if I have a set of points and want to get the value of
> the underlying data from the wms layer at each of the points.

In the WMS capabilities document look the queryable attribute in each
layer entity:

<Layer queryable="1">
				<Name>Layer Name</Name>
				<Title>Layer Title</Title>
				...

If you are searching in some catalog which show you the metadata there
should be something similar or maybe "Can Identify".

Goyo

>  most wms
> layers appear not to allow this, but other than just randomly trying large
> numbers of different wms services is there any way of identifying which
> might allow access to this underlying data?
>
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