Re: [gdal-dev] OSGB36 to WGS84 transformation

2013-01-09 Thread Hermann Peifer
On 2013-01-09 16:13, Johnny wrote: Are you aware of any way to batch process this in Linux to enable swift conversion of multiple references? You'd need a script that maps the 2-letter grid cell identifiers to the respective offsets, then calculates the Easting and Northing values. I can se

Re: [gdal-dev] OSGB36 to WGS84 transformation

2013-01-09 Thread Johnny
Thanks Hermann, Hermann Peifer writes: > The lower left corner coordinates of the SD square are: > 300 000 metres East > 400 000 metres North > > So your test coordinate is at (Easting Northing): 380150 402109 > > echo "380150 402109" | gdaltransform -s_srs EPSG:27700 -t_srs EPSG:4326 > -2.3008

Re: [gdal-dev] OSGB36 to WGS84 transformation

2013-01-09 Thread Johnny
Jukka Rahkonen writes: > Johnny gmx.co.uk> writes: >> >> I am trying to convert OSGB grid references to WGS84, but do not succeed >> and don't understand why? > > Conclusion: gdaltransform does not understand OSGB grid references. What made > you to believe it would? I could not find anything

Re: [gdal-dev] OSGB36 to WGS84 transformation

2013-01-09 Thread Hermann Peifer
The lower left corner coordinates of the SD square are: 300 000 metres East 400 000 metres North So your test coordinate is at (Easting Northing): 380150 402109 echo "380150 402109" | gdaltransform -s_srs EPSG:27700 -t_srs EPSG:4326 -2.30083027968938 53.5152719980087 48.8662291513756 Please no

Re: [gdal-dev] OSGB36 to WGS84 transformation

2013-01-09 Thread Jukka Rahkonen
Johnny gmx.co.uk> writes: > > Hi, > > I am trying to convert OSGB grid references to WGS84, but do not succeed > and don't understand why? > > I use > > : echo "SD8015002109 "|gdaltransform -s_srs EPSG:27700 -t_srs EPSG:4326 > > which gives > > : -7.55729138544866 49.7667307394399 50.480

[gdal-dev] OSGB36 to WGS84 transformation

2013-01-08 Thread Johnny
Hi, I am trying to convert OSGB grid references to WGS84, but do not succeed and don't understand why? I use : echo "SD8015002109 "|gdaltransform -s_srs EPSG:27700 -t_srs EPSG:4326 which gives : -7.55729138544866 49.7667307394399 50.480780794 If I use [1], the result is : 53.515279 -