[postgis-tickets] [PostGIS] #3713: Data loss on big encoded polyline

[PostGIS]

#3713: Data loss on big encoded polyline
---------------------+---------------------------
 Reporter:  323942   |      Owner:  pramsey
     Type:  defect   |     Status:  new
 Priority:  medium   |  Milestone:  PostGIS 2.3.3
Component:  postgis  |    Version:  2.3.x
 Keywords:           |
---------------------+---------------------------
 it is true as expected
 {{{
 --it is true as expected
 SELECT
 ST_IsClosed(ST_LineFromEncodedPolyline('guhiFwmpqEs]fJwmAbmAcmAngAwGve at wGrcBg|@~bBo_ at bQ{c at fTos@vLs]bGscBsD{uAkf at cuB{aAkMsD{kAc[os at rDs`AzOs{@zTwj at zOkCnZoPntBoPf|@oKzOseAj}A{c at zw@c[bj at s]bmAcQvj at oAfEcVfw@s{@vvDce@~gBwQfr at _b@rv at s]ve at s{@nU{}B~C{c at kCsl@gEkCSo|CsDkHoAk_A_SklBw`@s`AgJchA?kH?_eAoUon@{Os]sIkiASs`Ab[cpBf|@_`Ajf at wBz@kMvGgYvrAbBz^rDn}@jf at znBbLrhBjCjwDg@bBsD~McBnF{Jf^wVr{@{EfO{zAbuBcG~H{zA~bB{Of|@_b at jxAos@f|@od at jH_q@bLowCnZkbB?kk at Ss`Ab[s`A~bBwhA~oCco at f{CgOb`@kMb[{JvL{JvLkRnUcrAzOwmAgJ_`AzT_b at zaAwj@~p at gYfw@wGbrAbBrq at rDrhBvGf|@nAjnArNf^fw at zEjf@nF~f at zErv@v~@jz at rgEvV~eCfOrkCvLrIsDj`HrNzY~p at bwAjRb`@zJ{@jW_DvrAgOfEoAbcAgY~a at g^jCcGjWco at nPw[zOoZrXg^jH{JfYs]zJkMbo at sb@rcBkbBnZ{YfYgObGSzm at oA~oCbhAj_An_ at faF~iArI~Cve at bQrrBbt@bQnUjRvVbLzO~sArtAnx at nU~a at be@z^be at ni@fh at rXfc@jWvVjRvo at zTfw@~Wnx at fc@v[be at bVvVzJb~@j\jp at R~Hzc at rIja@z at rIjCrSrDbj@rD~f at zE~a at vBb[vBj\bBz^nAnZSz^?~\Srb at wBnn@oArXcBni at kCf^?fc at SnFcBb`@g@~f at _Dbe@_Drg at kCn_@{Ej\_Drb at kCfYwBfJz^fmEr]~sFzTrgE?z_G??jC~oCbLnUvj at rDbrArDraCfJjpEsD~bBjH??zYz at zxBfEbpBzOjlBnUr~Ave at jlBvrAjiAz|@nvAjsAzr at nlAf|@~p at vj@fJ~_Ab[zh at r]z^vVjHzEzxBjxAznBbcAju at n_@f}BngA~gBnUve at jf@vmAngAbQnZ~\~k at r~AfJzw at sDvmAkk@nn at kk@fYcmAjCkxAkMseAwBcQcGkf at oPscBzT{fAbL_l at vj@gOzY{@r{@wB~_AgJbj@?~C?nqA_l at jH_DjbBogA~iAnUr{@fJ~nAr]nFbBvmAsD~M_DnbAoUjf at _l@zw at _q@vhA{T~dAgJzzAfJr~A~k@~dA~p at vmArq@fEz at vy@~Rbo at _Dbo@w`@?kk at oPw`@co@{Ts`A{OcmAkf@{EkH_q at wcAwGkxAbL{sBvj at gnBvhAkxAzE{@zc at kHns@g|@jk at kRbGoAbcAgfAf@g at ns@ogAfYogA?cmAwGclDcLwdCwGgnBoPcmA?_~AkHg^oKgh at _b@_~As]sIgYf at gxBv`@kdAbt at oyBbwAgc@Rw[{JoZgY_`AkeCos at okDk_AkkEkM{m at cBcGkp@gbCs]suC?scBbLcrAbo at _~Azw at shBvQkf@zh at stAjCwGjCcmAkf@czBgw at _cB_eAczB_eAgnBwL_l@gT{aA{TwdCkCwdC?_bERsDnK_~Ar]ogAns at g|@zEwBjsAsg at jlB_q@rg at _g@nZs]nU_X~\seArIgh at kHgwEwGkk@_b@{aAcLsq@{w at kxAcLogAka@g|@{^cj at w`@gm@{^os at k\co at oPg|@wBwLcQwy at wGwrARgEvBo~BkCwrA{TgnB_Ik\sS_{@?we at oPsq@sXc`@os at wrAg_Bwy@od at oUsg@_X{zAsv at crA{|@gw at scB_l@ovA{JwV{aAsrBkCwGgfAczBwt at c|AS_NbGos at g@cVwG_b at oP_SkRgTg_Bc[s~A_l at s`AgJwj at rDco@rv at g^j_AsSfh at g|@rq at _eAS{ToZ{TwrAoKkf at s]cmA{JcQcVod at wpB?gOkHkk at kWgYkk@oPsq@'));

 }}}
 it is false, because ST_AsEncodedPolyline-ST_LineFromEncodedPolyline
 corrupt data.
 {{{
 --it is false, because ST_AsEncodedPolyline-ST_LineFromEncodedPolyline
 corrupt data.
 SELECT
 ST_IsClosed(ST_LineFromEncodedPolyline(ST_AsEncodedPolyline(ST_LineFromEncodedPolyline('guhiFwmpqEs]fJwmAbmAcmAngAwGve at wGrcBg|@~bBo_ at bQ{c at fTos@vLs]bGscBsD{uAkf at cuB{aAkMsD{kAc[os at rDs`AzOs{@zTwj at zOkCnZoPntBoPf|@oKzOseAj}A{c at zw@c[bj at s]bmAcQvj at oAfEcVfw@s{@vvDce@~gBwQfr at _b@rv at s]ve at s{@nU{}B~C{c at kCsl@gEkCSo|CsDkHoAk_A_SklBw`@s`AgJchA?kH?_eAoUon@{Os]sIkiASs`Ab[cpBf|@_`Ajf at wBz@kMvGgYvrAbBz^rDn}@jf at znBbLrhBjCjwDg@bBsD~McBnF{Jf^wVr{@{EfO{zAbuBcG~H{zA~bB{Of|@_b at jxAos@f|@od at jH_q@bLowCnZkbB?kk at Ss`Ab[s`A~bBwhA~oCco at f{CgOb`@kMb[{JvL{JvLkRnUcrAzOwmAgJ_`AzT_b at zaAwj@~p at gYfw@wGbrAbBrq at rDrhBvGf|@nAjnArNf^fw at zEjf@nF~f at zErv@v~@jz at rgEvV~eCfOrkCvLrIsDj`HrNzY~p at bwAjRb`@zJ{@jW_DvrAgOfEoAbcAgY~a at g^jCcGjWco at nPw[zOoZrXg^jH{JfYs]zJkMbo at sb@rcBkbBnZ{YfYgObGSzm at oA~oCbhAj_An_ at faF~iArI~Cve at bQrrBbt@bQnUjRvVbLzO~sArtAnx at nU~a at be@z^be at ni@fh at rXfc@jWvVjRvo at zTfw@~Wnx at fc@v[be at bVvVzJb~@j\jp at R~Hzc at rIja@z at rIjCrSrDbj@rD~f at zE~a at vBb[vBj\bBz^nAnZSz^?~\Srb at wBnn@oArXcBni at kCf^?fc at SnFcBb`@g@~f at _Dbe@_Drg at kCn_@{Ej\_Drb at kCfYwBfJz^fmEr]~sFzTrgE?z_G??jC~oCbLnUvj at rDbrArDraCfJjpEsD~bBjH??zYz at zxBfEbpBzOjlBnUr~Ave at jlBvrAjiAz|@nvAjsAzr at nlAf|@~p at vj@fJ~_Ab[zh at r]z^vVjHzEzxBjxAznBbcAju at n_@f}BngA~gBnUve at jf@vmAngAbQnZ~\~k at r~AfJzw at sDvmAkk@nn at kk@fYcmAjCkxAkMseAwBcQcGkf at oPscBzT{fAbL_l at vj@gOzY{@r{@wB~_AgJbj@?~C?nqA_l at jH_DjbBogA~iAnUr{@fJ~nAr]nFbBvmAsD~M_DnbAoUjf at _l@zw at _q@vhA{T~dAgJzzAfJr~A~k@~dA~p at vmArq@fEz at vy@~Rbo at _Dbo@w`@?kk at oPw`@co@{Ts`A{OcmAkf@{EkH_q at wcAwGkxAbL{sBvj at gnBvhAkxAzE{@zc at kHns@g|@jk at kRbGoAbcAgfAf@g at ns@ogAfYogA?cmAwGclDcLwdCwGgnBoPcmA?_~AkHg^oKgh at _b@_~As]sIgYf at gxBv`@kdAbt at oyBbwAgc@Rw[{JoZgY_`AkeCos at okDk_AkkEkM{m at cBcGkp@gbCs]suC?scBbLcrAbo at _~Azw at shBvQkf@zh at stAjCwGjCcmAkf@czBgw at _cB_eAczB_eAgnBwL_l@gT{aA{TwdCkCwdC?_bERsDnK_~Ar]ogAns at g|@zEwBjsAsg at jlB_q@rg at _g@nZs]nU_X~\seArIgh at kHgwEwGkk@_b@{aAcLsq@{w at kxAcLogAka@g|@{^cj at w`@gm@{^os at k\co at oPg|@wBwLcQwy at wGwrARgEvBo~BkCwrA{TgnB_Ik\sS_{@?we at oPsq@sXc`@os at wrAg_Bwy@od at oUsg@_X{zAsv at crA{|@gw at scB_l@ovA{JwV{aAsrBkCwGgfAczBwt at c|AS_NbGos at g@cVwG_b at oP_SkRgTg_Bc[s~A_l at s`AgJwj at rDco@rv at g^j_AsSfh at g|@rq at _eAS{ToZ{TwrAoKkf at s]cmA{JcQcVod at wpB?gOkHkk at kWgYkk@oPsq@'))));
 }}}

--
Ticket URL: <https://trac.osgeo.org/postgis/ticket/3713>
PostGIS <http://trac.osgeo.org/postgis/>
The PostGIS Trac is used for bug, enhancement & task tracking, a user and developer wiki, and a view into the subversion code repository of PostGIS project.