Database Management
Reference Manual
Expressions
: Positions, Directions and Orientations in Expressions
Positions, Directions and Orientations in Expressions
Use Positions in Expressions
The basic ways of defining a position are:
•
Position attribute plus optional WRT. For example:
POS OF /VESS1 WRT /* or P1 POS OF /CYL2
•
Cartesian position. For example:
N 45 W 20000 U 1000
•
Cartesian position from an element. For example:
N 1000 FROM /ATEST.
•
Cartesian position from a ppoint. For example:
N 1000 FROM P1 OF /BOX2.
•
Cartesian position from an attribute. For example:
N 1000 FROM POSS OF /SCTN1
•
Any numeric value within a position may itself be an expression. For example: the following is a valid position expression
N (DESP[1] + 10) E
The Cartesian position may optionally be followed by WRT to specify the axis system. See
WRT
.
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