Donnet , Sebastien wrote:
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...)
Sebastien,
It turns out they need to be space separated instead of tab separated.
Also, put the longitude first. If you file a ticket on this limitation
we will likely get to fixing it.
gdaltransform -s_srs NAD27 -t_srs NAD83
-80.7771 71.9881
-80.776396134163 71.9887576959729 9.47713851928711e-05
Best regards,
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