The SELECTOR displays lists of the observations and variables in the currently active data object (when there is one). You can select items in these lists to form a subset of ACTIVE observations and variables.

ACTIVE variables and observations are those which are highlighted, or if none are highlighted, those which are listed.

Only the ACTIVE variables are used in ViSta's analyses and visualizations.

You can create a new data object containing only the ACTIVE observations and variables with the DATA menu's CREATE DATA menu item.

You make a SELECTOR item ACTIVE by clicking it. You can select several items by dragging your cursor over them. You can add items to a selection by CTRL-clicking, or CTRL-dragging.

You form a selection with the buttons at the top of the SELECTOR. These buttons let you put data items IN the selection or take them OUT of the selection. You can also DROP a selection or RESET all data items to the selection.
