GroupDefn(s)

groupdefns($p)

Returns a list of the group definitions for the data parameter $p.

groupdefn($p[ref])

Finds the group definition of a group data point. It is normally used with data parameters.

For example if you have created the following data parameter.

$g=data(10~20:2,20~30:6,30~40:4,40~50:2)

You can access the group definition of one of the data points.

groupdefn($g[3])  will return 30~40