XMM-Newton Science Analysis System
selectlib (selectlib-4.72.1) [xmmsas_20141104_1833-14.0.0]
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Selected-function
The selected function facilitates step-wise filtering of tables.
Used as a sub-expression it evaluates to true for a particular row
if that rows has been selected in the selection process preceding
the current one. If the table undergoes selection for the very first
time, selected returns true for all table rows, i.e., has
no effect. As an example, the expression:
SELECTED && PHA >= 10
selects all rows which where selected in the previous selection cycle
and with PHA values greater than or equal to 10.
XMM-Newton SOC/SSC -- 2014-11-04