[Proj] How to use +towgs84

[Frank Warmerdam]

Aaron Friesen wrote:
> Just to clarify, however, if I am taking for example UTM NAD83 to latlong
> NAD83 without a datum shift, I do not need +towgs84 specified.  Correct?

Aaron,

That is correct.

And, even if you did, as long as the shifts match no datum shifting
work will be done.

Best regards,

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