[GRASS-dev] Re: 7.x Status Update (Glynn Clements)

[Moritz Lennert]

On 07/08/08 06:54, Michael Barton wrote:
> 
> On Aug 6, 2008, at 9:29 PM, Glynn Clements wrote:
>>
>>> **i.class - This seems important. Not replicated in GUI.
>>> **i.ortho.photo - Important. Not replicated in GUI
>>
>> Important or not, i.class is fairly complex, i.ortho.photo is very
>> complex. Both are substantial GUI applications using curses and
>> libraster as a GUI toolkit.
>>
>> Even a crude hack job (like the conversion of v.digit to Tcl/Tk) would
>> be a fair amount of work. It would be better if someone who understood
>> the processes involved were to re-design the UI from scratch. I would
>> expect that any non-trivial UI built with curses and libraster is
>> bound to have significant usability defects.
> 

> I'm not sure how to best go about replacing i.class. One way to start 
> might be to use v.edit code, since we don't need large, complex vectors.

The added value of i.class is not the training area creation. You can do 
that with v.digit + v.to.rast. Its added value is the functionality it 
provides around the area creation, i.e. immediately showing the spectral 
signature, displaying matching cells, etc.

So, IMHO it's a (very helpful) "convenience" module, but not more. It 
might be the occasion to rethink the image processing work processes and 
identify which types of convenience functionalities we would like to see 
and then to implement them from scratch (maybe cannibalising some of 
i.class).

Moritz