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Re: [udig-devel] Re: [Geotools-devel] Bursa Wolf Parameter once again
Hi

We implemented a solution along the lines suggested but due to the variety of  ways we use uDig we superimposed the Eclipse IDE problem view and a configuration parameter to set the level warning, error etc. different applications can then set the default according to their requirements, which seems to have satisfied the users if not the developers. Other map accuracy problem areas can be imagined that could also make use of this feature.

Tony Kennedy

Jesse Eichar wrote: 
A note to Jesse, I would prefer it if udig showed a warning dialog (or
something easier to see than a logged message) to tell users that you
are not preforming any datum shifts and that this may be a bad thing.
That way they will not wonder as much why their roads are 200 m from
where they expect them to be.

Rueben

    
I agree rueben, although nothing as annoying as a dialog.  Each layer
has various decorations one being a warning.  if you click on the layer
a message appears in the status line explaining what the warning or
error is about.  The getPositionalAccuracy should be able to provide
enough information to set that warning.



  
On Mon, 2005-25-04 at 21:06 +1100, Martin Desruisseaux wrote:
    
What about the following algorithm? Could it work?

1) If the CRS contains an authority element, uses the authority
    code for loading the full CRS from the database.

2) Otherwise, search a datum or CRS with the same name in the
    EPSG database. Alias are compared. If a match is found, returns
    the full CRS or datum.

3) Otherwise, if and only if the datum name is "unknow", be lenient
    on datum shift (just log a warning instead of throwing an exception).

3) Otherwise (if the datum name is not "unknow"), throws the usual
    exception.


	Martin.


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