Layer visibility [No Viruses detected]

[Tom Chadwin]

Hello all

If I manipulate layer visibility programmatically, I believe I have to
save the map for such changes in visibility to take effect in the
viewer. However, this presumably affects all sessions, including both
current and future ones.

Is there any way to change the visibility of a layer in the context of
the current session only? A real world example is a map with lots of
different facilities layers, all of which are set not to display
initially on the map. I have created a search engine which returns links
to zoom to various features on a given layer. I would like the layer
with those features on to be made visible when someone performs that
search, but I do not want this to affect the visibility of that layer
either in concurrent sessions, or in future sessions. Is this possible?

Thanks

Tom


Tom Chadwin
ICT & Web Development Officer
Telephone: 01434 611530 
Mobile: 
Fax: 01434 611677
Email: tom.chadwin at nnpa.org.uk
Web : www.Northumberland-national-park.org.uk <http://www.Northumberland-national-park.org.uk>

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