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.
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Function Description: slope.intercept.fromptsThis is an old version of pts.to.interceptslope, returns slope than intercept of a line given two points. The alternate function, pts.to.interceptslope, returns intercept then slope, which is more standard. This is kept for compatibility with old functions.