Display Lines as Points
woodbri at SWOODBRIDGE.COM
Wed Mar 14 14:49:04 EDT 2007
Setup the layer as a POINT layer and construct a SQL query that extracts
the first point of the line segment. You might want to create a view to
simplify the SQL in the mapfile or to create an index on the points.
Steve Lime wrote:
> MapServer itself cannot selectively display just one point from a
> feature. Perhaps there is a Oracle function to do the extraction on
> the database side? PostGIS users might have an idea that could be
> translated into Oracle.
>>>> On 3/14/2007 at 10:17 AM, in message
> <D12153701D57FF45A1AD64DFB6571D7C0157A5C4 at svie0107.vie01.local>,
> "Pleyer, Walter" <Walter.Pleyer at LFRZ.AT> wrote:
>> Hi Folks!
>> We have a rather tricky problem and maybe someone out there knows a
>> solution. We have a layer of rivers, divided in 500m Segments,
>> stored in an Oracle Spatial DB. Each segment is a simple line with
>> a starting point and an end point, but they shall not be displayed
>> a slines, but rather as points. What we want is simnply to
>> represent every segment by its starting point only. Is that
>> LFRZ A-1200 Wien, Dresdner Strasse 89 Tel: ++43(1)33 176/421 Fax:
>> ++43(1)33 176/999 Email: walter.pleyer at lfrz.at WWW:
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