r.water.outlet

[Jianping Xu]

> 
> I got r.water.outlet from the moon just yesterday and it just gives me a blank
> screen for whatever I feed it on the command line. We are trying to 
> delineate basins based on certain stream gages and a DEM. I tried using
> r.water.outlet based on the products generated by r.watershed4.0. Has any
> body else faced the same problem???
> 
> Nalneesh Gaur, River Forecast Center, TULSA  
> 

I noticed the question about r.water.outlet has been asked frequently 
over several months. When I needed the same function last year, I too 
could only find it in the Manual List. So I went on to write one called 
r.upbasin.downpath for my need. Someone may want to try it when 
r.water.outlet has not been completely restored.

R.upbasin.downpath uses DRAINAGE-DIRECTIONS defined by the 
src.contrib/NMSU/WRAT program: 
                         4  3  2
                         5     1  
                         6  7  8
which MIGHT differ from those defined by r.watershed. If that's the case,
it's better to use WRAT, or to reclass the drainage map at first.

Some features: displaying the upper basins and flow paths on graphics window, 
no manual pages, ...

R.upbasin.downpath can be ftp-ed from landfill.rutgers.edu in the
pub/incoming directory.

***
Jianping Xu					 
Center for Remote Sensing and Spatial Analysis	 Email: jianp at ocean.rutgers.edu
Rutgers University			 	 Phone: (908) 932-9631
New Brunswick, NJ 08903-0231			 Fax:   (908) 932-8746