Hello, PostGIS. I have some legacy functions on my hand that I am bringing out
of the Dark Ages.
Once upon a time, I needed to take advantage of the "position" parameter to
explicitly indicate that I wanted to append to a linestring.
select st_astext(st_addpoint(st_makeline(st_makepoint(0, 0), st_makepoint(1,
1)), st_makepoint(2,2), -1));
st_astext
-------------------------
LINESTRING(0 0,1 1,2 2)
Apparently that is now the same thing had I left off the -1 completely.
select st_astext(st_addpoint(st_makeline(st_makepoint(0, 0), st_makepoint(1,
1)), st_makepoint(2,2)));
st_astext
-------------------------
LINESTRING(0 0,1 1,2 2)
However, if I left the -1 in there which still seems to support the current
documentation, https://postgis.net/docs/ST_AddPoint.html, psql protesteth.
select st_astext(st_addpoint(st_makeline(st_makepoint(0, 0), st_makepoint(1,
1)), st_makepoint(2,2), -1));
ERROR: Invalid offset
Perhaps the doc should drop the -1, too?
Charlton Galvarino
1 (803) 233-6205 : voice
1 (803) 223-9579 : fax
[email protected]
P.O. Box 50960
Columbia, SC 29250
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