Hi,

I have a bunch of data in NAD27 (lat, lon ascii files) that I would like to 
convert into NAD83.
How can I do that easily with gdal?

Up to now I've tried it like this:

gdaltransform -s_srs NAD27 -t_srs NAD83 < nad27.txt > nad83.txt

using a nad27.txt that looks like that (tab separated):

71.9881 -80.7771
71.9880 -80.7199
71.8889 -80.9131
71.8892 -80.9117
71.9041 -80.8410

but didn't go anywhere... a nad83.txt was created, but blank...
what input format am I supposed to provide?  (I tried comma separated among 
others...)

thanks in advance if you can help,


S/

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