That really is a guessing game, because even if someone finds the coordinates that the map could fit into, it still doesn't mean that they're correct. Do you have a reason to think that the datum is WGS84? I think South Africa probably uses a more accurate regional datum for local maps - that makes a lot more sense unless you're working directly with web mapping applications or you want to use GPS data directly.
Isn't there any metadata provided with the shapefiles? I didn't know that it was possible to have a shapefile without any kind of spatial reference stored in the metadata. You could try making a location based on the shapefile as a georeferenced file. Best, Daniel -- B.Sc. Daniel Lee Geschäftsführung für Forschung und Entwicklung ISIS - International Solar Information Solutions Deutschhausstr. 10 35037 Marburg Festnetz: +49 6421 379 6256 Mobil: +49 176 6127 7269 E-Mail: [email protected] Web: http://www.isi-solutions.org Am 05.07.2011 12:59 schrieb "Rainer M Krug" <[email protected]>: > Hi > > I have two shape files of which I do not know the projection (and it seems > that the person I got them from does not know either...). The maps are from > the Keurboom nature reserve area in South Africa ( > http://plak.co.za/moreinfo.php?id=347) and the two shp files have the > folowing bounding boxes: > > > In layer spatial reference system units : xMin,yMin 21340.4,-3755528.75 : > xMax,yMax 34244.9,-3749187.87 > > In layer spatial reference system units : xMin,yMin 17001.2,-3754438.15 : > xMax,yMax 37019.9,-3743929.77 > > > I know this is a guessing game, but it must be a common projection - the map > datum is very likely (almost certainly) WGS84. > > > Any suggestions welcome, > > > Rainer > > > -- > Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, > UCT), Dipl. Phys. (Germany) > > Centre of Excellence for Invasion Biology > Stellenbosch University > South Africa > > Tel : +33 - (0)9 53 10 27 44 > Cell: +33 - (0)6 85 62 59 98 > Fax (F): +33 - (0)9 58 10 27 44 > > Fax (D): +49 - (0)3 21 21 25 22 44 > > email: [email protected] > > Skype: RMkrug
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