[GRASS5] Re: GRASS: "default" datum parameters

[Paul Kelly]

Hello Markus

On Thu, 30 Mar 2006, Markus Neteler wrote:

> ---
> 4       Used in Default rome40 region            <<<<<<< Default ??
>        (PROJ.4 Params towgs84=-225.000,-65.000,9.000)
>        Default 3-Parameter Transformation       <<<<<<< Default ??
> ---
>
> Of course the user has to select, but a newbie always takes the
> value called "Default" which is the worse of the selections here
> (even as it is the *Sardegna* 3 params which is not indicated, not
> peninsula!).
>
> Do you have a suggestion to substitute the "Used in Default" message?

I agree it is definitely a problem. But for some datums like WGS84 then 
this default value is actually the best and the one they should use. So 
we can't just change the message to say something like "low accuracy; 
don't use this one!" as it is not true for all datums. Most of the time 
however when there is only one option the user will not be prompted. So it 
is maybe OK!

I have made some changes in CVS to add an extra informational message and 
not make the word "default" so prominent. I also tidied up gislib slightly 
by removing some datum transformation functions that are no longer used.

Paul