SYNOPSIS

hkcircle radius angle_start angle_end intervals time [expression]

DESCRIPTION

The hkcircle macro scans along a circular arc in the HK-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 H and K are calculated for each point. You may, for example, supply an expression to calculate values for L or include expressions to offset the values of H and K.

EXAMPLES