net.object {stream.net} | R Documentation |
Components of the net.object
.
The network data structure, as returned from net.qmodel
and net.arcinput
, is a list with three components:
links | a data frame of the topological structure |
segs | a data frame of the segment structure (pieces of links) |
cords | a list of the x and y coordinates for each segment |
links has the components
lid | identifier for the link |
parent | index of parent link (or 0 if root) |
left | index of left child (or 0 if terminal) |
right | index of right child (or 0 if terminal) |
depth | topological depth of link (number of links from root) |
first | index of first segment of this link |
last | index of last segment of this link |
strahler | Strahler order |
shreve | Shreve order |
segs has the components
sid | identifier for the segment (for external ref) |
link | index to parent link |
nxt | index of the next segment for this link |
prev | index of the previous segment for this link |
up | if segment (and coordinates) oriented upstream = 1, else = 0 |
length | segment coordinate length |
cords has the components
x | x coordinates with a sublist for each segment |
y | y coordinates with a sublist for each segment |
x
and y
sublists are
the respective sid
s.)
Denis White, white.denis@epa.gov
net <- net.qmodel (5) net