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Comparison of WMS and WFS services

I am trying to overlay WFS over WMS and still not successful. So wanted to know when and why would someone use WFS?

I need to extract the info from the WFS layer that I am trying to overlay onto the WMS. If yes how?

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marked as duplicate by underdark May 16 '12 at 6:45

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

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There is an existing comparison of WMS and WFS at gis.stackexchange.com/questions/8348/… –  PolyGeo May 15 '12 at 23:29
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oh did not see that, please close this question –  Sam007 May 15 '12 at 23:38
    
I changed my comment to an Answer which should let you close it now. –  PolyGeo May 16 '12 at 4:26

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up vote 0 down vote accepted

There is an existing comparison of WMS and WFS available in Stack Exchange GIS already.

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