SLOPE

Name

slope

Purpose (one Line)

Compute slope of a line using part of the data.

Description

The left and right hand values are computed from the mean of the
input data array from -width to +width about the mid-point of the
bin. The slope is derived from these means and the uncertainty
comes from propagating the uncertainties.

Calling Sequence

coeff=slope(a,b,width,x,y)

Inputs

a - Mid-point of the left hand bin in units of x.
b - Mid-point of the right hand bin in units of x.
width - Half-width of each bin.
x - Independant values of x-y relationship.
y - Dependant values to get slope from.

Optional Input Parameters

Keyword Parameters

Outputs

Return value is a vector, [slope,ds], which is the slope of the
line from a to b and ds is the uncertainty on the slope.

Common Blocks

Side Effects

Left, right values and slope are printed to the screen.

Restrictions

Procedure

Modification History

Written by Marc W. Buie, Lowell Observatory.