I am making an application using mainly Python to find the most fuel efficient route using primarily Google Maps data. I have been using the Encoded Polyline Algorithm to get elevation data, as well as a small Python module for the conversions. Normally, the conversion from LatLngs into polyline works fine. However, this URL returns a 400 error:
https://maps.googleapis.com/maps/api/elevation/json?locations=enc:yf{{EreegNl{WqnW_pKl{gAzqHsuYb_Cedg@sln@r{n@vaIpcBnm]viUzrm@kd^aebA|n`@t_aAe{L}}BmzLynfAi}X~sa@ukh@~|WfwmBa}b@krlAnqc@q|CubJdxsAes`@ca_Bh`Rw}Ob_m@bivAy|k@vnDzq_@_zx@g`LxxkAkzu@mrhAvwl@v_jAipZol\\jb[ejfA~p[ndzAmrhAgm_@nkStrAj|BhjZwtj@uhl@bh@{zDxfq@l{z@qf^_igAjbt@e~FydLssQmpZlv~@jlVq|y@_{d@xk`@~cfAbyr@qsfAs}|@srAvk]kcEqf@x~j@n{Qi_q@_gY|khAptr@~o@grxA}`_A`u{@lgMolJhpl@qsj@mcUxaoAab_@eklAxj`@isDr`Gz`Fhra@xb`@{{T{zc@ihPbrvA{xBgmrBpl\\hxgB_yZc`gBsvIr`}At~FelzA`oElsBrzg@pmtAqaaAmlUvce@rhh@ndZy|X}~p@mos@yxRn{X`eeAr}Ywg|@y_ArlPgwCvfNwby@gaDnjzA}pEDieIcgVuiX{waA}yC~uTp|u@|saAjiSynv@}th@klq@`la@phu@srqAilHfqkAtax@qmmAcvp@npmA~no@y_YusTg_PaodAouIrdg@ttg@nqx@cwQipDt~`@wslAqtFc|AybVtmAo{Nv`s@qbQ_bUfy`A~il@{oMautAqyaAlhZfsl@fdf@xzEslcAsvn@xdo@`t{@iup@_{NdgdB_pa@k_Zp_h@||X}}t@idlA|az@irY_pGkbIrhC`puAgkI{eg@}mm@ej@xtyAzlq@yc_@{__A}t@q|Z_jNhlBd}IbrmAxFw{Cqu[vfLjmj@iflA_|j@jilAde`@rbPccg@{xvA~aU|yaAnjMshgAc`NlchAgzGdz@qc^itg@f}h@`he@zbn@{pJkudAuvH~xe@qp`AulGpi~Apm[cvQggShea@~ye@cxTqmnA}xa@|qd@gjg@i_Ahax@r`Kay_A`eOlwOw|hArte@zs|@}cl@y`T|``Aovi@qmXj`V}th@gvM|zw@fjk@|vf@xna@{ddAovoAb{U|wYcfb@hjLarYghS~j}@{jLoxLyjCbaVjvFy_`@hc`@w}k@gs@wv@puJ|k_@s~Kw`YoStcmBalGmgVag^}fWpq@d{Dfqe@c_FaqWnoZpgg@uaoAlsPdb_Aisd@dgA_f\\uqh@ecObxD~bq@do_Azui@cl^gzBdsV_hQvsGknW{_fAr`Mnvn@j{Fmmw@}gVx~hAoBo_cBjcFjd{Ayot@myi@vezA_wJmtHtf@cfgAzxVviw@t}Viad@uo^dyd@iu[}h~@nnOfqgAl`_Akx_@wvb@htAdj[_wLmqIxse@g~}@pfW~deAw}c@sv_BibIlzyAn`l@fpFq`y@kiY{f^ed[ha~Apuj@gyV~wR}`@}EtzJsjG{_`@em_@d|Hyw_A_dl@p`t@jwy@glXa`EdhmAm~p@qdkAnwmAxuw@mBsfVwg^ooe@fn\\vrr@ism@nc`@zaAyzK{sAwpm@brH{{XweNnedAuiGm`_AckPdfy@n}g@yuqAuiAo@wwN``Ue~UjvCjcVreo@hqA~lC}_^uxp@lpo@kga@o|[dv~@nl`@ylw@gfMd{eBwxBs{U~z\\jiOxzH}{DqsImblAac[`~rAg`@aclApym@|iZycYrvVffHheXqvHpaBlhGeq_@ilQnya@obW}waBbzQu{OsrAt~yAzrB`s@rr_@yxx@mhGvqAm~bArjCn`Z~vi@fvXy_s@ivFi`Lh~KhbaAe_[c{Jrou@zyFyrq@jrS{uIcl_@glMs|Lv~y@lyv@wrbAohk@dxr@otw@i_\\n|~@hqVwaz@~cCv`kAha\\liH_odAu}x@nvJlqr@`_OszB`eDs`Bb`Ps`w@v|FgzGkm`@t~Ixiu@dws@{bXicy@q`t@fik@kb@gnh@y_Drce@ple@kxj@ima@jc[|_lA`~Jckf@f|q@_{Tmko@pt]vuVkoTl~BjyZfdOopU_Hljp@cjU_o`AcfPirI|s@rdIshb@pkJxgs@|nu@eiCcumAsop@rxPbzn@tlPazC_m_@a_]
Using both the python module and google.maps.geometry.encoding.decodePath(), the line has valid points in it (300 to be exact).
Any other line made like this works fine. What makes this line in particular not work?
The maximum length of a URL is 2,083 characters, the posted URL is at least 2154 characters
sources:
https://www.google.com/search?q=maximum+length+of+URL
[SO] What is the maximum length of a URL in different browsers?
This has changed over time. The maximum length in the documentation is now 8192 characters.