Topic: Utilities

Topic Description:

Basic R utilities used in many packages and functions, such as date and string manipulations, statistical distributions, geometry of lines and distances. The R package date is required for the two data functions.

File: utilities/geometry.r

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Function: xydistmat

Function Description: xydistmat

Distance between two x-y coordinates, but accepts two sets of coordinates in a single matrix (4 columns ordered x1, y1, x2, y2). For use with apply.

Function Arguments:

ArgumentDefault Value

Function Source:

return( xydist(pts[,1],pts[,2],pts[,3],pts[,4]) )