[prev in list] [next in list] [prev in thread] [next in thread] 

List:       postgis-users
Subject:    [postgis-users] How to define and select ends of river courses depicted by polygons?
From:       Shaozhong SHI <shishaozhong () gmail ! com>
Date:       2022-03-14 22:57:52
Message-ID: CA+i5JwaMU-gPbyWjVZog4sM_G5S5xSC-+Pz_0mg2gWW+53JQ7A () mail ! gmail ! com
[Download RAW message or body]

[Attachment #2 (multipart/alternative)]


In PostGIS, we can select start and end points of a line.

However, in order to show more details of river courses, polygons are used
to depict linear features.

How to define and select their end points?

Can anyone enlighten me?

Regards,

Shao

[Attachment #5 (text/html)]

<div dir="ltr">In PostGIS, we can select start and end points of a \
line.<div><br></div><div>However, in order to show more details of river courses, \
polygons are used to depict linear features.</div><div><br></div><div>How to define \
and select their end points?</div><div><br></div><div>Can anyone enlighten \
me?</div><div><br></div><div>Regards,</div><div><br></div><div>Shao</div></div>



_______________________________________________
postgis-users mailing list
postgis-users@lists.osgeo.org
https://lists.osgeo.org/mailman/listinfo/postgis-users


[prev in list] [next in list] [prev in thread] [next in thread]