[postgis-users] Closed linestring is not closed?

[Nicolas Ribot]

Hi,

Returns true here
(POSTGIS="2.0.0" GEOS="3.3.2-CAPI-1.7.2" PROJ="Rel. 4.7.1, 23
September 2009" LIBXML="2.7.8" USE_STATS (procs from 2.0 r7948 need
upgrade) On Mac OS X

Whats your version ?

Nicolas


On 16 June 2012 09:11, georgew <gws293 at hotmail.com> wrote:
> The following linestring which I believed to be closed, and looks closed, in
> fact gives me false in reply to st_isclosed(geom).
> It's probably something very simple which is eluding me but I am at a loss
> why I get this result. I am using postgis 2.0, Win 7 64.
> Any suggestions?.
> Thank you
>
> select ST_GeomFromEWKT ('SRID=2193;LINESTRING(1581855.1284829
> 5370000,1581884.80445 5369966.19158,1581887.30288
> 5369961.19296,1581902.69023 5369908.80888,1581907.78739
> 5369901.31078,1581945.46961 5369869.11694,1582053.42388
> 5369814.82165,1582068.01672 5369800.32473,1582058.81757
> 5369782.83187,1582041.22099 5369762.24115,1582016.32738
> 5369744.55038,1582008.82968 5369741.95223,1581956.34859
> 5369744.1582,1581886.27473 5369753.66394,1581876.27826
> 5369753.56525,1581858.78411 5369750.96838,1581848.78695
> 5369745.8714,1581826.49107 5369718.28368,1581829.1853
> 5369683.29527,1581789.4928 5369635.51667,1581784.59315
> 5369625.42075,1581782.09266 5369615.42448,1581782.19125
> 5369605.42788,1581762.49236 5369562.74497,1581757.49345
> 5369557.74732,1581727.60161 5369540.0572,1581717.6048
> 5369537.45937,1581690.11486 5369539.76211,1581654.93006
> 5369559.55987,1581644.93496 5369569.45777,1581639.8378
> 5369576.95587,1581612.24962 5369591.75436,1581597.25527
> 5369594.15546,1581584.66075 5369601.55455,1581569.56816
> 5369616.4514,1581567.06973 5369621.45002,1581564.37413
> 5369646.44183,1581581.67146 5369671.63101,1581614.16168
> 5369684.32251,1581626.55902 5369696.91662,1581628.95886
> 5369701.9146,1581628.95989 5369709.41204,1581626.36184
> 5369716.90982,1581603.67538 5369756.79911,1581598.57889
> 5369769.19553,1581595.8826 5369789.18905,1581558.00391
> 5369846.47434,1581532.81696 5369876.36736,1581527.72047
> 5369888.76378,1581522.42785 5369928.75081,1581494.84072
> 5369951.1467,1581492.24266 5369958.5445,1581492.04687
> 5369988.63425,1581488.15835779 5370000,1581855.1284829 5370000)')
>
> --
> View this message in context: http://postgis.17.n6.nabble.com/Closed-linestring-is-not-closed-tp4998311.html
> Sent from the PostGIS - User mailing list archive at Nabble.com.
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