More on modelling and Grass

Agustin Lobo alobo at ija.csic.es
Thu Oct 28 08:10:08 EDT 1999


I evaluated an student version of Grassland and we even
converted some of our csh scripts to tcl (a pain). 
The Visual toolbox was probably there because
writing tcl scripts is more difficult than writing
csh scripts. Anyway, these toolboxes (originally
developped in Khoros, then in Erdas imagine and others)
can only write simple flows and I think that they are
more nice tools for sale-persons to atract custommers
than real useful instruments.

In other aspects, Grassland had many bugs but was impressive
in many aspects, for example: the display was independent of
the projection of the location, so you could display your
data in a different projection. Also, you could call Excell
files linked to your sites maps.

On Wed, 27 Oct 1999, Roy Sanderson wrote:

> Hello All
> 
> I don't know whether this is relevant to this disucssion, but as I recall,
> when the first PC version of Grass was launched by LAS about 5 years ago,
> it contained some sort of Grass 'Visual Toolbox', allowing you to link
> various Grass routines together directly through the GUI.  The publicity
> gave the impression that this would be similar to linking modelling
> components together in a program such as ModelMaker.  I've not tried
> Grassland, so I can't say how good this approach is, but has anyone tried
> to use this feature regularly, and would an extension of that approach
> provide both power and simplicity for the non-programmer that many comments
> suggest?  Unfortunately, I suspect that the code is not in the public
> domain however.
> 
> Roy
> 
> 



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