SYNOPSIS

klcircle radius angle_start angle_end intervals time [ expression]

DESCRIPTION

The klcircle macro scans along a circular arc in the KL-plane in reciprocal space. The radius of the arc is given by radius and the arc runs from angle_start to angle_end. The number of data points collected will be intervals+1. Count time is given by time, which if positive, specifies seconds and if negative, specifies monitor counts.

The optional last argument can supply expressions to be evaluated after K and L are calculated for each point. You may, for example, supply an expression to calculate values for H or include expressions to offset the values of K and L.

EXAMPLES

klcircle 1 0 90 10 60 "K += .5; L += .5"

klcircle 1 0 90 10 60 H=L/.125

klcircle 1 0 360 10 60 H=0