[GRASS5] A naive opinion on how grass *should* work

[Thomas Adams]

Carl,

I agree completely with this assessment; I know I have been presented with this
problem and I also think the comments made by Russell Nelson regarding first time
users is compelling.

Tom Adams



Carl Worth wrote:

> On May 3, Glynn Clements wrote:
>  > Carl Worth wrote:
>  > >  > Yes; the default region is explicitly chosen by the user. Same for the
>  > >  > current region. The only time that the current region is changed is if
>  > >  > the user decides to change it.
>  > >
>  > > Except when the suer is just panning/zooming around a map and the
>  > > region is being adjusted all the time. ;-)
>  >
>  > Running d.zoom constitutes a decision to change the region. Changing
>  > the region is what d.zoom does; it just does it visually rather than
>  > through literal coordinates.
>
> I understand that this is precisely what is currently done. Insofar as
> it behaves as documented, it is not a bug in that respect.
>
> But, as I have mentioned before. This behavior makes it exceedingly
> painful for a user to switch back and forth between two different
> monitors viewing different areas of the map. I think things should be
> changed so that each monitor keeps track of its own region independent
> of "the region" in GRASS.
>
> To phrase things in terms that must be considered a non-feature if not
> a glaring bug, think about this sequence:
>
>         d.mon start=x0
>         g.region everything
>         d.rast map
>
>         d.mon start=x1
>         d.rast map
>         d.zoom # zoom in a bit interactively
>         d.vect overlay
>
>         d.mon select=x0
>         d.vect overlay
>
> Clearly, at this point, the overlay data will not be properly
> displayed on monitor x0. I can't see any reason to justify this
> behavior.
>
> -Carl
>
> --
> Carl Worth
> USC Information Sciences Institute                 cworth at east.isi.edu
> 3811 N. Fairfax Dr. #200, Arlington VA 22203              703-812-3725
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Tom Adams
Development & Operations Hydrologist
NWS-Ohio River Forecast Center

thomas.adams at noaa.gov
http://www.nws.noaa.gov/er/ohrfc/

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