Description:
Transform a set of 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_TWTOD( PICID,
NXY, WX, WY, DX, DY, STATUS )
Arguments
PICID = INTEGER (Given)
Picture identifier
NXY
= INTEGER (Given)
Number of data points to transform
WX = REAL(NXY) (Given)
Array of x
world coordinates
WY = REAL(NXY) (Given)
Array of y world coordinates
DX =
REAL(NXY) (Returned)
Array of x data coordinates
DY = REAL(NXY) (Returned)
Array
of y data coordinates
STATUS = INTEGER (Given and Returned)
The global status
Copyright ©2000, Central Laboratory of the Research Councils