[GRASS-user] sh: 1: v.net.components: not found

[Markus Neteler]

Dear Gunnar,

On Thu, Oct 24, 2013 at 4:02 PM, Gunnar Oehmichen
<oehm8895 at uni-landau.de> wrote:
> Dear GRASS user list,
>
> While accessing GRASS via R i ran over the problem of missing a certain
> GRASS function: v.net.components
...
>
> grass   6.4.1-1ubuntu2
...
> could not be run (127), and produced the error message:
>    sh: 1: v.net.components: not found

You would need to update to at least the next dot release: 6.4.2 (bettet 6.4.3):

http://trac.osgeo.org/grass/wiki/Release/6.4.2-News#Newmodules
"

New modules

i.topo.corr - Computes topographic correction of reflectance in
satellite imagery
m.nviz.image - Creates a 3D rendering of GIS data (renamed from nviz_cmd)
v.net.allpairs - Computes the shortest path between all pairs of nodes
in the network
v.net.bridge - Computes bridges and articulation points in the network
v.net.centrality - Computes degree, centrality, betweeness, closeness
and eigenvector centrality measures in the network
v.net.components - Computes strongly and weakly connected components
in the network
v.net.connectivity - Computes vertex connectivity between two sets of
nodes in the network
v.net.distance - Computes shortest distance via the network between
the given sets of features
v.net.flow - Computes the maximum flow between two sets of nodes in the network
v.net.spanningtree - Computes minimum spanning tree for the network
v.net.timetable - Finds shortest path using timetables
"

It has been added to a newer release of GRASS 6 than you have
currently installed.

For ubuntu packages, see
http://grass.osgeo.org/download/software/linux/

Hope this helps,
Markus