[postgis-devel] [PostGIS] #183: ST_LineToCurve gives getPoint4d_p offset error

[PostGIS]

#183: ST_LineToCurve gives getPoint4d_p offset error
----------------------+-----------------------------------------------------
  Reporter:  robe     |       Owner:  robe         
      Type:  defect   |      Status:  assigned     
  Priority:  low      |   Milestone:  postgis 1.4.0
 Component:  postgis  |     Version:  1.4          
Resolution:           |    Keywords:               
----------------------+-----------------------------------------------------
Changes (by mcayland):

  * milestone:  postgis 1.4.1 => postgis 1.4.0

Comment:

 Yeah I see. Removing the outer ST_LineToCurve() function from your example
 above gives the following:

 select st_linetocurve(st_geomfromtext('LINESTRING(0 0,-0.0239315652662951
 0.0251361090611227,-0.0466009335008786
 0.0514162068286816,-0.0679534922100711
 0.0787769822452901,-0.0879378012096791
 0.107152520806448,-0.106505716548904 0.136474463354359,-0.123612506493335
 0.166672170761126,-0.13921695928762 0.197672894104599,-0.153281482438188
 0.229401949926901,-0.165772193276862 0.261782900153418,-0.176659000587176
 0.29473773623882,-0.185915677096747 0.328187067096473,-0.193519922661073
 0.362050310358527,-0.199453417986539 0.396245886505893,-0.203701868763191
 0.430691415400453,-0.206255040100989 0.465303914746028,-0.207106781186548
 0.499999999999998,-0.206255040100989 0.534696085253969,-0.203701868763192
 0.569308584599544,-0.199453417986539 0.603754113494104,-0.193519922661074
 0.63794968964147,-0.185915677096747 0.671812932903525,-0.176659000587177
 0.705262263761177,-0.165772193276864 0.738217099846577,-0.15328148243819
 0.770598050073094,-0.139216959287623 0.802327105895394,-0.123612506493337
 0.833327829238871,-0.106505716548901 0.863525536645645,-0.0879378012096717
 0.892847479193563,-0.067953492210058 0.921223017754728,-0.0466009335008591
 0.948583793171342,-0.0239315652662687 0.974863890938906,3.39173134022985e-
 14 1.00000000000003,0.0251361090611646 1.02393156526633,0.0514162068287321
 1.04660093350092,0.0787769822453494 1.06795349221012,0.107152520806517
 1.08793780120972,0.136474463354438 1.10650571654895,0.166672170761214
 1.12361250649338,0.197672894104697 1.13921695928767,0.229401949927009
 1.15328148243823,0.261782900153537 1.1657721932769,0.294737736238949
 1.17665900058722,0.328187067096612 1.18591567709678,0.362050310358676
 1.1935199226611,0.396245886506051 1.19945341798656,0.43069141540062
 1.20370186876321,0.465303914746205 1.206255040101,0.500000000000184
 1.20710678118655,0.534696085254163 1.20625504010098,0.569308584599746
 1.20370186876317,0.603754113494313 1.19945341798651,0.637949689641685
 1.19351992266103,0.671812932903745 1.18591567709669,0.705262263761404
 1.17665900058711,0.73821709984681 1.16577219327678,0.770598050073331
 1.15328148243809,0.8023271058956 1.13921695928753,0.83332782923904
 1.12361250649325,0.863525536645775 1.10650571654882,0.892847479193655
 1.08793780120961,0.921223017754785 1.06795349221002,0.948583793171366
 1.04660093350084,0.9748638909389 1.02393156526628,0.999999999999999
 1,1.02393156526627 0.974863890938902,1.04660093350084
 0.948583793171368,1.06795349221001 0.921223017754787,1.08793780120961
 0.892847479193658,1.10650571654882 0.863525536645777,1.12361250649325
 0.833327829239042,1.13921695928752 0.802327105895602,1.15328148243809
 0.770598050073334,1.16577219327677 0.738217099846851,1.17665900058708
 0.705262263761483,1.18591567709666 0.671812932903865,1.193519922661
 0.637949689641846,1.19945341798648 0.603754113494515,1.20370186876315
 0.569308584599989,1.20625504010097 0.534696085254447,1.20710678118655
 0.500000000000509,1.20625504010102 0.465303914746569,1.20370186876325
 0.430691415401024,1.19945341798663 0.396245886506491,1.1935199226612
 0.362050310359152,1.18591567709691 0.328187067097122,1.17665900058738
 0.29473773623949,1.16577219327711 0.261782900154107,1.15328148243848
 0.229401949927606,1.13921695928796 0.197672894105317,1.12361250649372
 0.166672170761855,1.10650571654934 0.136474463355095,1.08793780121017
 0.107152520807188,1.06795349221062 0.0787769822460299,1.04660093350148
 0.0514162068294181,1.02393156526696 0.0251361090618519,1 0,0 1)'));

 So I'm not sure I agree with your diagnosis on simple lines. This is
 another crasher we need to fix for 1.4 then :(

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/183#comment:4>
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