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selectlib (selectlib-4.77) [xmmsas_20230412_1735-21.0.0]


Three-dimensional filter functions

The following functions evaluate to true if a vector lies inside or on the border of the specified three dimensional figure: where

$\textstyle \parbox{.30\textwidth}{{\tt vcen}}$ 		 : vector defining symmetry axis of figure

$\textstyle \parbox{.30\textwidth}{{\tt alpha}}$ : half opening angle of cone in rad
$\textstyle \parbox{.30\textwidth}{{\tt vtest}}$ : vector for inclusion test
Please note: For the sake of readability and clarity it is recommended to avail these filters in conjunction with the In operator (see below).



XMM-Newton SOC -- 2023-04-16