Photogrammetry in the Ordnance Survey: 1972–1986

Abstract

Following a period of considerable debate and change in the organisation of the Ordnance Survey, the use of photogrammetric methods and equipment in the support of its mapping tasks during theperiod 1972-1986 is reviewed. 276

The ‘Unique Role’ of Government Lawyers in Canada

“…71 This standard conception continues to dominate Canadian codes of conduct, lawyers' practice, legal education and depictions of lawyers in the media and popular culture. 72 This dominant view 'is everywhere in Canadian law'. 73 However, there is growing recognition that this view is flawed both on a descriptive and a normative level.…”

Input of Photogrammetric Data to Geographical Information Systems

“…In some cases, such as the MAPS300 system, both off line and on line operation is possible, so that editing may take place either after or during data acquisition. At Ordnance Survey, for example, off line editing has been preferred and it has been found that one MAPS300 system will serve the needs of several stereoplotters equipped with MAPS200 (Farrow, 1987;Newby and Walker, 1986); more recently, the Laser-Scan LITES system has been investigated as a further facility for off line editing, illustrating that the data acquisition and editing provisions may well emanate from different vendors.…”

“…The manufacturers readily admit that there are and it seems inevitable that many organisations will prefer to continue to collect data by existing methods and transfer their datasets to the GIS database in a later, probably batch process similar to the one they will use for transfer of data held on the digital mapping systems which the GIS will supersede. National mapping organisations in the British Isles, for example, which have invested heavily in PASS in McLaren and Berrill's category (ii), will be reluctant to replace them for some time (Brand, 1987;Farrow, 1987;Walsh, 1987). Translation of data from one format to another is a problem of the age which receives several mentions in the Chorley Report (Department of the Environment, 1987) but is perfectly possible if sufficient funds are devoted to software development.…”