Re: Dump LineString GEOM to Point GEOM (One Model To Another)

On Wed, 29 May 2013 07:13:04 -0700 (PDT)
kpurdon <kylepurdon@gmail.com> wrote:

> Is it possible, outside of using a raw SQL query (PostGIS/PostgreSQL) to do
> a GEOM dump.
>
> I have a table (model) where 1 row is 1 LineString and I need to dump that
> table into another table (model) where 1 row is 1 point from the LineString.
>
> Raw SQL would be something like:
>
> SELECT geom AS points FROM ST_DumpPoints((SELECT fl_line FROM greenland.line_paths WHERE ...));
>
> In this case line_paths is the LineString table and fl_line the LineString
> GEOM.
>
> How can I do this within GeoDjango w/o using rawSQL and bypassing the
> models?

Linestrings do have coord_seq property that you can iterate over and generate point geometries form that and save to another table.

--

Jani Tiainen

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