000			01182cab a2200241 4500
001			ABS38457
008			090401t1987 xxu||||| |||| 00| 0 eng d
035			_a(Sirsi) u10752
041			_aeng
100			_aHazell, T.
245			_aInvestigating digitised mapping techniques
260			_c1987
350			_a0
490			_aChartered Surveyor Weekly _v21(7) 12 November 1987, 29-30(2)
520			_aReports on the work of digitising mapping data in Britain, which started in 1975 but only became a national priority three or four years ago. Describes the digitising of the National Grid by the Ordnance Survey , efforts by local authorities , notably Cheshire and Dudley to digitise planning data and a field trial of a digital records base carried out by the National Joint Utilities Council in 1982. Concludes with a look at work being carried out by Pinpoint Analysis to pinpoint the precise geographic position, to within 1 metre of every address in Britain.
650			_aCOMPUTERS
650			_aDIGITAL MAPPING
650			_aGEOGRAPHIC INFORMATION
650			_aLAND INFORMATION SYSTEMS
690			_aPRACTICE AND TECHNIQUES
942			_n0
948			_c04/03/1997
999			_c6832 _d6832