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
>> R-sig-Geo@r-project.org
>> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>
>
> -- 
> *Emmanuel Blondel*
> GIS Consultant
>
> Geographic Information Systems
> in Agronomy - Environment -Fisheries
> Email: emmanuel.blondel1@gmail.com - Emmanuel.Blondel@fao.org
> Phone: +33 6 45 97 87 52


-- 
*Emmanuel Blondel*
GIS Consultant

Geographic Information Systems
in Agronomy - Environment -Fisheries
Email: emmanuel.blondel1@gmail.com - Emmanuel.Blondel@fao.org
Phone: +33 6 45 97 87 52

	[[alternative HTML version deleted]]

