[GRASS-user] Calculating Length Between Points On Stream Network

[Rich Shepard]

On Sat, 27 Feb 2010, Rich Shepard wrote:

> 242856.60 431305.07 242551.88 432149.70

   Oops! I forgot the 'id' at the beginning of the line.

   So, after adding that I get a new warning:

WARNING: Wrong input format: id 242856.60 431305.07 242551.88 432149.70
WARNING: [1] input format errors

   The man page says:

Nodes can be piped into the program from file or from stdin. The syntax is
as follows:

id start_point_category end_point_category
or
id start_point_x start_point_y end_point_x end_point_y
Points specified by category must be exactly on network nodes, while, when
specifying coordinates, the next node to a given coordinate pair is used.

   What I tried was to put the upstream easting upstream northing downstream
easting downstream northing as the points.

   What should the syntax be?

Rich