[mapserver-users] Attribute query at geographic coordinate

[Matt McClelland]

Hi Peter

I wonder if cartoDB(.com) would be a better product for you. It is similar
in nature to Google Fusion Tables.  It is open source and free.  It seems
fast you can load geodata into the system then via an API send a SQL
statement including your lat and long.  This will return results in several
formats including json. This gives option may give you a bit more
flexibility. It is still in fairly early stages of developments but seems
very good so far.  They offer a free trial account for a small amount of
data, enough for your proof of concept.  Then you can either pay for a
hosted account or download the software and set up your own.  This tool can
also render map files based on your query.

Hope that helps a bit.

Matt  :)

Matt McClelland
mob: 0411 306 650
e-mail: matt at wildwalks.com
web: http://www.wildwalks.com/
Books: http://www.wildwalks.com/books
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On Mon, Nov 14, 2011 at 11:07 AM, Peter Weilandt <PeterWeilandt at shaw.ca>wrote:

> I stumbled across MapServer in my search for a tool to use in a website.
> I want to develop a website that will use a coordinate (lat & long), which
> is easily obtained from a user on the client side by clicking on a Google
> map, and then transferring this coordinate to the server side where it will
> be used to sequentially query many (500+) shapefile polygon layers,
> extracting the values from 2 fields from each layer at this coordinate,
> saving these values in a list (Excel, textfile?), and then using this list
> to return values to the user on the client side.  This sounds simple in
> concept, but is MapServer a tool that can accomplish this and, if so, are
> there any examples showing the code to use for such a query?
>
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