Folks,
Sorry about that. The file:
http://www.spatialdbadvisor.com/file_download/55/PostGIS_Parallel.sql
Did not contain all the required types and functions. One needed also to access
the types and functions for my ST_GetVector function.
I have now included all the required types and related functions in the above
script and replaced it on my site.
I have changed a bit in the code as it didn't handle some situations as I
expected. Hopefully my test cases give good coverage.
My tests, conducted on PostgreSQL 9.1 and PostGIS 2.0 on Windows 7 64 Bit all
work as this example shows:
With geometries As (
select ST_GeomFromText('LINESTRING(1 1,1 10)') as geom,
10.0 as offset,2 as roundFactor,0 as curved
union all select ST_GeomFromText('LINESTRING(0 0,1 1,1 2)') as geom,
0.5 as offset,2 as roundFactor,
generate_series(0,1,1) as curved
union all select ST_GeomFromText('LINESTRING(0.0 0.0, 45.0 45.0, 90.0 0.0,
135.0 45.0, 180.0 0.0, 180.0 -45.0, 45.0 -45.0, 0.0 0.0)') as geom,
10.0 as offset,2 as roundFactor,
generate_series(0,1,1) as curved
union all select ST_GeomFromText('MULTILINESTRING((0 0,1 1,1 2),(2 3,3 2,5
4))') as geom,
0.5 as offsetRight,2 as roundFactor,
generate_series(0,1,1) as curved
)
select ST_AsText(g.geom) as origGeom, g.offset,g.curved,
ST_AsText(ST_Parallel(g.geom,g.offset,g.roundFactor,g.curved)) as
geomWKTLeft,
ST_AsText(ST_Parallel(g.geom,0.0-g.offset,g.roundFactor,g.curved)) as
geomWKTRight
from geometries as g;
"LINESTRING(1 1,1 10)";10.0;0;"LINESTRING(11 1,11 10)";"LINESTRING(-9 1,-9 10)"
"LINESTRING(0 0,1 1,1 2)";0.5;0;"LINESTRING(0.35 -0.35,1.5 0.79,1.5
2)";"LINESTRING(-0.35 0.35,0.5 1.21,0.5 2)"
"LINESTRING(0 0,1 1,1 2)";0.5;1;"COMPOUNDCURVE((0.35 -0.35,1.35 0.65),CIRCULARSTRING(1.35
0.65,1.46 0.81,1.5 1),(1.5 1,1.5 2))";"LINESTRING(-0.35 0.35,0.5 1.21,0.5 2)"
"LINESTRING(0 0,45 45,90 0,135 45,180 0,180 -45,45 -45,0 0)";10.0;0;"LINESTRING(7.07 -7.07,45
30.86,90 -14.14,135 30.86,170 -4.14,170 -35,49.14 -35,7.07 7.07)";"LINESTRING(-7.07 7.07,45
59.14,90 14.14,135 59.14,190 4.14,190 -55,40.86 -55,-7.07 -7.07)"
"LINESTRING(0 0,45 45,90 0,135 45,180 0,180 -45,45 -45,0 0)";10.0;1;"COMPOUNDCURVE((7.07
-7.07,45 30.86,82.93 -7.07),CIRCULARSTRING(82.93 -7.07,90 -10,97.07 -7.07),(97.07 -7.07,134.71 31.15,170
-4.14,170 -35,49.14 -35,7.07 7.07))";"COMPOUNDCURVE((-7.07 7.07,37.93 52.07),CIRCULARSTRING(37.93
52.07,45 55,52.07 52.07),(52.07 52.07,89.71 13.85,127.93 52.07),CIRCULARSTRING(127.93 52.07,135 55,142.07
52.07),(142.07 52.07,187.07 7.07),CIRCULARSTRING(187.07 7.07,189.16 4.01,190 0),(190 0,190
-45),CIRCULARSTRING(190 -45,187.13 -52.01,180 -55),(180 -55,45 -55),CIRCULARSTRING(45 -55,41.27 -54.28,37.93
-52.07),(37.93 -52.07,-7.07 -7.07))"
"MULTILINESTRING((0 0,1 1,1 2),(2 3,3 2,5 4))";0.5;0;"MULTILINESTRING((1.65 2.65,3 1.29,5.35
3.65))";"MULTILINESTRING((2.35 3.35,3 2.71,4.65 4.35))"
"MULTILINESTRING((0 0,1 1,1 2),(2 3,3 2,5 4))";0.5;1;"MULTICURVE((1.65 2.65,2.65
1.65),CIRCULARSTRING(2.65 1.65,3 1.5,3.35 1.65),(3.35 1.65,5.35 3.65))";"MULTILINESTRING((2.35
3.35,3 2.71,4.65 4.35))"
Sorry for any inconvenience.
The file is available for download via the link above.
regards
Simon
On Wed, 09 May 2012 23:27:04 +1000, Pedro Costa <pedrocostaa...@sapo.pt> wrote:
No problem Hugues.
Give me the same error:
ERROR: function st_parallel(geometry, numeric, numeric, integer) does
not exist
LINE 1: select ST_Parallel(the_geom, 3.0, 0.0, 0) as test from tests
Em 09-05-2012 13:48, Francois Hugues escreveu:
Sorry, I read your message too fast and forgot the PS.
Maybe you could try something like :
select ST_Parallel(the_geom, 3.0, 0.0, 0) as test from tests
Hugues.
-----Message d'origine-----
De : postgis-users-boun...@postgis.refractions.net
[mailto:postgis-users-boun...@postgis.refractions.net] De la part de Pedro Costa
Envoyé : mercredi 9 mai 2012 13:06
À : PostGIS Users Discussion
Objet : Re: [postgis-users] st_offsetcurve
Em 09-05-2012 11:28, Pedro Costa escreveu:
PS: I´m already install the function by your file
I'm already do that...
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