Inverse transformation defined?

This attribute indicates whether a
Mapping is able to transform coordinates in the

`"`

inverse`"`

direction (i.e. converting output
coordinates back into input coordinates). If this attribute is non-zero, the inverse transformation is
available. Otherwise, it is not. - Type:

All
Mappings have this attribute.

The TranInverse attribute value for a CmpMap is given by
the boolean AND of the value for each component Mapping.

The TranInverse attribute of
a FrameSet applies to the transformation which converts between the FrameSet

`’`

s current
Frame and its base Frame (as specified by the Current and Base attributes). This value is
given by the boolean AND of the TranInverse values which apply to each of the individual
sub-Mappings required to perform this conversion. The TranInverse attribute value for
a FrameSet may therefore change if a new Base or Current Frame is selected. -
An error will result if a Mapping with a TranInverse value of zero is used to transform coordinates in the inverse direction.

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