- 2 0 0 m ▁ ▁Vert ical ▁accuracy : ▁ 0 . 5 - 2 ▁Cont our ▁Inter val ▁( for ▁example : ▁if ▁cont our ▁interval ▁ 5 0 ▁m , ▁accuracy ▁will ▁be ▁ 2 5 ▁to ▁ 1 0 0 m ) ▁ ▁Deb ate ▁about ▁avail ability ▁of ▁data ▁The ▁USA ▁Fre edom ▁of ▁Information ▁Act ▁and ▁the ▁Electron ic ▁Fre edom ▁of ▁Information ▁Act ▁guarantee ▁access ▁to ▁virt ually ▁all ▁G IS ▁data ▁created ▁by ▁the ▁US ▁government . ▁Following ▁the ▁tr end ▁of ▁the ▁United ▁States , ▁much ▁of ▁the ▁V MAP ▁data ▁has ▁been ▁offered ▁to ▁the ▁public ▁domain . ▁ ▁But ▁many ▁countries ▁consider ▁mapping ▁and ▁cart ography ▁a ▁state ▁mon opol y ; ▁for ▁such ▁countries , ▁the ▁V MAP ▁Level 1 ▁data ▁are ▁kept ▁out ▁of ▁the ▁public ▁domain . ▁However , ▁some ▁data ▁may ▁be ▁commercial ised ▁by ▁national ▁mapping ▁ag encies , ▁sometimes ▁as ▁a ▁consequence ▁of ▁priv at isation . ▁ ▁Vari ous ▁public ▁groups ▁are ▁making ▁efforts ▁to ▁have ▁all ▁V MAP 1 ▁data ▁moved ▁to ▁the ▁public ▁domain ▁in ▁accord ance ▁with ▁FO IA ▁▁ ▁Further ▁steps ▁have ▁been ▁taken ▁by ▁the ▁Free ▁World ▁Maps ▁Foundation ▁and ▁others ▁to ▁have ▁the ▁data ▁lic ensed ▁under ▁the ▁GNU ▁General ▁Public ▁License , ▁while ▁remaining ▁copy right ed , ▁as ▁an ▁alternative ▁to ▁the ▁public ▁domain . ▁This ▁is ▁an ▁on going ▁debate ▁( as ▁of ▁ 2 0 0 6 ). ▁ ▁Copy right s ▁ ▁V MAP