DESCRIPTION
v.to.points creates points along input lines. The output is a vector with 2 layers.
Layer 1 holds the category and attributes of the input lines; all points created along the
same line have the same category, equal to the category of that line. In layer 2 each point
has it's unique category; other attributes stored in layer 2 are lcat - the
category of the input line and along - the distance from line's start.
NOTES
The dmax parameter is the maximum limit but not an exact
distance. To place points with exact distance from the beginning
of the vector line the user should use
v.segment.
To get points created for the beginning, middle and end only, use
the -i switch and set dmax so that:
(length of input line / 2) <= dmax <= length of input line
So if dmax is between 0.5x and 1.0x the line length, you
will always get points created at exactly the beginning, middle and
end of the input line.
EXAMPLE
In this example, the 't_powerlines' vector lines map in the
Spearfish 6.0
location is used to create points along the input lines:
v.to.points in=t_powerlines out=t_powerlines_points dmax=120
d.vect t_powerlines_points
SEE ALSO
v.segment,
v.to.rast,
v.to.db
AUTHOR
Radim Blazek
Last changed: $Date$