[GRASS-user] thoughts on v.transform

[Hamish]

Ravinder Singh Bhalla wrote:
> I just went through the painful process of fixing a badly
> geo-referenced vector against another vector. I used v.transform
> and a correspondence file to do the work. The module works really
> well. However I wonder whether it would be possible to modify the
> existing geo-referencing plugin or a vector equivalent of i.points
> to facilitate the process of creating a correspondence file for one
> vector against another?
> This would make the job much easier and also allow users to check up
> RMS  errors and drop offending points.

See i.vpoints

As an output it will make a POINTS file for i.rectify, but perhaps that
could be easily changed to output parameters for v.transform too. It is
already calculating the params for RMS checks and the
reverse-projection vector overlay.


Hamish



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