| | | dimensions-of | |
|
| [Generic Function] |
Purpose
Return the dimension specifications of a
space instance or one or more unit classes.
Method signatures
(space-instance standard-space-instance)
=> dimension-specifications-list
|
(unit-classes-specifier cons)
=> dimension-specifications-list
|
(unit-class standard-unit-class)
=> dimension-specifications-list
|
Package :gbbopen
Module :gbbopen-core
Arguments and values
| space-instance-or-unit-classes-specifier | A space instance, an extended unit-classes specification or a list of extended unit-classes specifications | |
| dimension-specifications-list | A proper list |
Returns
A list of (dimension-name (dimension-type
comparison-type))
See also
define-unit-class
make-space-instance
instance-dimension-value
instance-dimension-values
Examples
Return the dimensions defined for instances of
unit class hyp:
> (dimensions-of 'hyp) ((x (:ordered fixnum)) (y (:ordered fixnum)) (belief (:ordered number)) (velocity-range (:ordered number)) (color (:enumerated eq)) (classification (:enumerated eq))) >Return the dimensions of the
(bb hyps)> (dimensions-of (find-space-instance-by-path '(bb hyps))) ((x (:ordered fixnum)) (y (:ordered fixnum)) (belief (:ordered number)) (velocity-range (:ordered number)) (color (:enumerated eq)) (classification (:enumerated eq))) >
Note that the dimensions of a space instance (its dimensional extent as a container for other unit instances) is independent of any dimension values that the space instance might have as a unit instance:
> (instance-dimension-values (class-of (find-space-instance-by-path '(bb hyps)))) nil >or the dimensions that the unit class of the space instance might have:
> (dimensions-of (class-of (find-space-instance-by-path '(bb hyps)))) nil >
Note
The returned list of dimension specifications for a
space instance or for a unit class should not be destructively
altered.
The GBBopen Project
| | | dimensions-of | |