Dear Simon, Could you have a look to the indications below? Thanks in advance to provide your feedback,
Emmanuel Le 18/06/2012 12:27, Emmanuel Blondel a écrit : > Hello, > > it seems that this crs corresponds to the epsg code 27700 > - I found the epsg code here > http://en.wikipedia.org/wiki/Ordnance_Survey_National_Grid > - you can look here http://spatialreference.org/ref/epsg/27700/ > > You can use the complete Proj4 definition > http://spatialreference.org/ref/epsg/27700/proj4/ > CRS("+proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000 > +ellps=airy +datum=OSGB36 +units=m +no_defs") > > or use the epsg code > CRS("+init=epsg:27700") > > Hope this helps, > > Emmanuel > > > Le 18/06/2012 12:17, Simon Parker a écrit : >> Does anyone how to define the CRS for the United Kingdom ordnance survey >> National Grid system? >> >> >> What is the equivalent of the following? >> >> CRS('+proj=longlat +ellps=GRS80 +datum=NAD83 +no_defs') >> >> >> Thankyou. >> [[alternative HTML version deleted]] >> >> _______________________________________________ >> R-sig-Geo mailing list >> [email protected] >> https://stat.ethz.ch/mailman/listinfo/r-sig-geo > > > -- > *Emmanuel Blondel* > GIS Consultant > > Geographic Information Systems > in Agronomy - Environment -Fisheries > Email: [email protected] - [email protected] > Phone: +33 6 45 97 87 52 -- *Emmanuel Blondel* GIS Consultant Geographic Information Systems in Agronomy - Environment -Fisheries Email: [email protected] - [email protected] Phone: +33 6 45 97 87 52 [[alternative HTML version deleted]]
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