AGI_TDTOW - Transform data to world coordinates

Description:

Transform a set of data coordinates into world 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 world coordinates equal the data coordinates.

Invocation:

CALL AGI_TDTOW( PICID, NXY, DX, DY, WX, WY, STATUS )

Arguments:

PICID = INTEGER (Given)

Picture identifier

NXY = INTEGER (Given)

Number of data points to transform

DX = REAL(NXY) (Given)

Array of x data coordinates

DY = REAL(NXY) (Given)

Array of y data coordinates

WX = REAL(NXY) (Returned)

Array of x world coordinates

WY = REAL(NXY) (Returned)

Array of y world coordinates

STATUS = INTEGER (Given and Returned)

The global status