[mapserver-users] displaying line starting and ending points

[Raivo Alla]

Thank you Thomas and thank you José María (I'll try something similar
with ArcSDE soon).


Almost happy,
Raivo
On Wed, Dec 10, 2008 at 5:04 PM, thomas bonfort
<thomas.bonfort at gmail.com> wrote:
> a couple of links:
>
> http://trac.osgeo.org/mapserver/browser/trunk/msautotest/misc/rfc48.map
> http://trac.osgeo.org/mapserver/browser/trunk/msautotest/misc/expected/rfc48.png
>
>
> On Wed, Dec 10, 2008 at 16:02, thomas bonfort <thomas.bonfort at gmail.com> wrote:
>> rfc48 has just entered the mapserver trunk, and will be present in 5.4
>>
>> to apply a style block to just the start point, you'd use something like
>>
>> STYLE
>>  GEOMTRANSFORM "start"
>>  SYMBOL "mysymbol"
>>  SIZE ....
>>  ANGLE AUTO #to orient the symbol along the first segment
>> END
>>
>> you also get the "end" and "vertices" geomtransform to apply the style
>> to last or intermediate points of the line.
>>
>> cheers,
>> thomas
>>
>> On Wed, Dec 10, 2008 at 15:44, José María Michia
>> <jose.maria.michia at gmail.com> wrote:
>>> Hello,
>>>
>>> 2008/12/10 Raivo Alla <snaperski at gmail.com>:
>>>> Hello,
>>>>
>>>> I have a question concerning how to draw starting and ending points of
>>>> line features.
>>>> One option is to create a separate points layer in ArcGIS, where all
>>>> the starting and ending points of lines are in.
>>>> But is' t there some better solution or workaround how to get things done ?
>>>
>>> Using "Postgis" as data store, let you get the start and end points
>>> from line geometry with something like:
>>>
>>> DATA "geom from (SELECT oid,StartPoint(the_geom) FROM line_layer) as
>>> foo using unique oid using SRID=-1"
>>>
>>> And for end points:
>>>
>>> DATA "geom from (SELECT oid,EndPoint(the_geom) FROM line_layer) as foo
>>> using unique oid using SRID=-1"
>>>
>>> See:
>>>
>>> http://postgis.refractions.net/documentation/manual-1.3/ch06.html#id2572496
>>>
>>> I do not know ArcGIS. Maybe there is something similar to this.
>>>
>>> Saludos
>>> José María
>>>
>>>>
>>>>
>>>> Humbly yours,
>>>> Raivo
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>>>>
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>>
>