offset.points {DSpat} | R Documentation |
Convert x,y point locations on the line and a distance (negative is left of line for the direction of travel) for a series of points in a strip.
offset.points(line, pts)
line |
vector with named components of x0,y0,x1,y1; line traverses from (x0,y0) to (x1,y1) |
pts |
dataframe of x,y,distance for each observed point; x,y is the location on the line that is perpendicular to the object; a negative distance implies it is on the left side of the line as defined by the direction of travel |
pts dataframe with x,y locations of the objects offset from the line at the appropriate distance and side.
Jeff Laake