Hi Uwe,

I would guess that such use case was not on the list of features when the 
original JUMP was developed or since that. However, I can see that you are not 
the first one with that wish and Peppe has made such a tool to his CAD 
extension. The name of the tool in Draw closed linestring. Download the 
extension from 
https://sourceforge.net/projects/opensit/files/Openjump/PlugIn/CADExtension/ 
and drop it into lib\ext. New tools are added into the standard edit tool box.

-Jukka-

Uwe Dalluege wrote:


Hi,

thank you for the tips.
Is there a reason why OJ can not catch the first point directly?

Regards

Uwe


Am 09.04.2015 um 06:46 schrieb Rahkonen Jukka (MML):
> Hi,
>
> The trick is that when you are drawing a new feature the new vertices do not 
> snap to the newly added vertices of that non-finalized geometry. There are 
> workarounds:
> - digitize first a point and snap the start and end points of the line 
> into it
> - digitize a polygon and convert it into linestring or linearring later.
>
> If you really need a geometry that is LINEARRING in WKT (not just 
> LINESTRING with the same start and end point) you must either draw a 
> polygon and use geometry converter, or draw a line and convert it by 
> editing the WKT from
>
> LINESTRING (
>      666 435,
>      714 307,
>      590 344,
>      666 435
> )
>
> into
>
> LINEARRING (
>      666 435,
>      714 307,
>      590 344,
>      666 435
> )
>
> -Jukka Rahkonen-
>
>
> Uwe Dalluege wrote:
>
>> Hi,
>
>> how can I draw a closed LineString (LinearRing)?
>
>> When I try to catch the first point of the LineString with the last point of 
>> the same LineString OpenJUMP does not catch the first point.
>
>> Is there a trick?
>
> Regards
>
> Uwe
>
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