[GRASS-dev] r.terraflow not GPL

Helena Mitasova hmitaso at unity.ncsu.edu
Fri Oct 19 20:51:35 EDT 2007

I will try to contact Laura and see whether she has any plans for  
maintaining it and
changing the license. If not, I suggest to remove it, although we  
will lose
the multiple flow direction flow routing (maybe it could be added to  
and the capability to process larger DEMs (not possible with  

There is a new system available called terrastream with many new  
options and Pfaffstetter-code based watershed hierarchy output, which  
is better and
faster and can be run as GRASS module, but users will have to  
download and compile
it by themselves - link can be provided on wiki add-on list.
The code is huge, C++ and would be hard to maintain within GRASS.

so give me few days to see whether I can get in touch with Laura and  
we can then
do what will be most appropriate,


Helena Mitasova
Dept. of Marine, Earth and Atm. Sciences
1125 Jordan Hall, NCSU Box 8208,
Raleigh NC 27695

On Oct 19, 2007, at 6:47 PM, Glynn Clements wrote:

> I must have missed this thread at the time:
> http://grass.itc.it/pipermail/grass-dev/2006-April/022612.html
> I've just noticed that r.terraflow has its own licence which isn't
> compatible with the GPL (advertising clause), so we shouldn't be
> providing binaries.
> Ideally, we should have an --enable-nongpl switch so that people don't
> trip over this accidentally. Or, better still, just remove all non-GPL
> code.
> -- 
> Glynn Clements <glynn at gclements.plus.com>
> _______________________________________________
> grass-dev mailing list
> grass-dev at grass.itc.it
> http://grass.itc.it/mailman/listinfo/grass-dev

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