Counting browse hits

[Steve Lime]

One way would be to use some simple AJAX code to get the counts from
MapServer
via a mode=nquery and display that information on the page. There are
probably 
ways to ensure it doesn't have to happen for each pan/zoom action too
although
it gets tricky with reloading pages. A dhtml, load once, page can make
much easier
since you could trigger the AJAX call for a count update when the
person/entity
values change.

Steve

>>> DjwStone <D.Stone at ED.AC.UK> 10/11/2006 9:10:59 AM >>>
I'm developing a CGI MapServer application using MapServer 4.8.3.
The mapfile defines several layers which display symbols representing
the
location of entities associated with specific people. The user
interface
allows the type of entity and person to be selected. The type of entity
will
determine which layer is displayed; the person chosen will be applied
to the
layer by run-time substitution, and so will affect the number of
points
returned in the layer.

All this works just fine.

What I need to do now is to present, along with the result map, a count
of
the number of points returned. It's a useability thing - if the user
has
zoomed the map in and then browsed for some entity/person combination,
the
points returned quite likely lie outside the frame of the result map.
So
it's handy to know if there were any hits before going to the trouble
of
trying to locate them! I thought displaying [nr] was the answer, but
it
always returns zero, presumably because this is happening in browse
mode
rather than query.

Any clues how to proceed gratefully accepted.

Cheers,

Dave

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