<p>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.</p>
<p>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.</p>
<p>Best,<br>
Daniel</p>
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<div class="gmail_quote">Am 05.07.2011 12:59 schrieb "Rainer M Krug" <<a href="mailto:r.m.krug@gmail.com">r.m.krug@gmail.com</a>>:<br type="attribution">> Hi<br>> <br>> I have two shape files of which I do not know the projection (and it seems<br>
> that the person I got them from does not know either...). The maps are from<br>> the Keurboom nature reserve area in South Africa (<br>> <a href="http://plak.co.za/moreinfo.php?id=347">http://plak.co.za/moreinfo.php?id=347</a>) and the two shp files have the<br>
> folowing bounding boxes:<br>> <br>> <br>> In layer spatial reference system units : xMin,yMin 21340.4,-3755528.75 :<br>> xMax,yMax 34244.9,-3749187.87<br>> <br>> In layer spatial reference system units : xMin,yMin 17001.2,-3754438.15 :<br>
> xMax,yMax 37019.9,-3743929.77<br>> <br>> <br>> I know this is a guessing game, but it must be a common projection - the map<br>> datum is very likely (almost certainly) WGS84.<br>> <br>> <br>> Any suggestions welcome,<br>
> <br>> <br>> Rainer<br>> <br>> <br>> -- <br>> Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology,<br>> UCT), Dipl. Phys. (Germany)<br>> <br>> Centre of Excellence for Invasion Biology<br>
> Stellenbosch University<br>> South Africa<br>> <br>> Tel : +33 - (0)9 53 10 27 44<br>> Cell: +33 - (0)6 85 62 59 98<br>> Fax (F): +33 - (0)9 58 10 27 44<br>> <br>> Fax (D): +49 - (0)3 21 21 25 22 44<br>
> <br>> email: <a href="mailto:Rainer@krugs.de">Rainer@krugs.de</a><br>> <br>> Skype: RMkrug<br></div>