[mapserver-users] zooming to a point with itemquerymap
Brian Fischer
bfischer at mpls.houstoneng.com
Mon Apr 29 13:38:44 PDT 2002
Hi MapServer Users,
I am trying to embed a mapserver generated image inside an ASP page and
am having some problems. I don't even know if this is possible, but
here it goes.
I am trying to use the itemquerymap mode to produce a map of the
selected point. I can get a map zoomed to the full extent of my map
file, but I can not get a map zoomed in on the point.
Here is the image tag inside the asp page. This produces a map at full
extent.
<img
src="/mapserv35/cgi-bin/mapserv.exe?map=sitemap.map&mode=itemquerymap&la
yers=&qlayer=wqsites4-25-02&map_wqsites4-25-02_filter=%22<%=rsSiteMap("s
iteid")%>%22&item=SITEID&value=<%=rsSiteMap("siteid")%>">
As soon as I put parameters in to zoom to the point, I get an error.
<img
src="/mapserv35/cgi-bin/mapserv.exe?map=sitemap.map&mode=itemquerymap&la
yers=&qlayer=wqsites4-25-02&map_wqsites4-25-02_filter=%22<%=rsSiteMap("s
iteid")%>%22&item=SITEID&value=<%=rsSiteMap("siteid")%>&mapxy=[shpmid]&b
uffer=50000">
I believe the reason why it does not work is because MapServer isn't
replacing [shpmid] with it's value. I think this is a limitation of the
itemquerymap or I am simply using it wrong. Has anyone done a similar
thing using only Mapserv CGI not mapscript? Are there other modes I
could use to produce the same map?
Thanks,
Brian
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