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Command-Line Specification: Points, Vectors

Many commands require or optionally use specifications of points or vectors in 3D coordinate space.

In general, a point-spec can be:

In general, a vector-spec can be:

The default coordinateSystem for interpreting vector specifications varies by command, and could be that of a specific data model or just screen coordinates (X horizontal, Y vertical, Z in/out of screen).

See also: command usage conventions

UCSF Resource for Biocomputing, Visualization, and Informatics / November 2021