Description:
Transform a
set of double precision world coordinates into data coordinates using a transformation stored in the
database. The picture identifier signifies which picture contains the required transformation
structure. If this identifier is negative then the current picture is used. If no transformation
structure is found then the identity transformation is used, i.e. the data coordinates equal
the world coordinates.
Invocation
CALL AGI_TWTDD( PICID, NXY, WX, WY, DX, DY,
STATUS )
Arguments
PICID = INTEGER (Given)
Picture identifier
NXY = INTEGER
(Given)
Number of data points to transform
WX = DBLE(NXY) (Given)
Array of x
world coordinates
WY = DBLE(NXY) (Given)
Array of y world coordinates
DX =
DBLE(NXY) (Returned)
Array of x data coordinates
DY = DBLE(NXY) (Returned)
Array
of y data coordinates
STATUS = INTEGER (Given and Returned)
The global status
Copyright ©2000, Central Laboratory of the Research Councils