[mapserver-users] How can i get an attribute value of a specific shape in the mapfile?

[Steve Lime]

I suppose if you were using a RDBMS you could do a sub-select in the data
statement. Other idea would be to chain a query with a map draw. That is, do
a query to identify 'red fern' and then use attributes from it to
parameterize a map draw by passing in the area via runtime substitution.

Steve

On Wednesday, September 21, 2011, jjwang <jaja0506 at gmail.com> wrote:
> Is there any way to get an attribute value of a specific shape in the
> mapfile?
> For example:
> I want to know the value of the attribute 'AREA' of a shape whose 'NAME'
is
> 'REDFERN'.
> So that I can use it in the EXPRESSION like this:
> CLASS
>  EXPRESSION ([AREA] > [the area value of shape whose name is 'redfern'])
>  ...
> END
>
> JJ
>
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