TRN_TR2x-Transform 2-dimensional data

Description:

Apply a compiled { $2 \rightarrow 2$} mapping to a set of 2-dimensional data points specified by separate arrays of $X_{IN}$ and $Y_{IN}$ coordinates.

Invocation:

CALL TRN_TR2x( BAD, NXY, XIN, YIN, ID, XOUT, YOUT, STATUS )

Arguments:

BAD = L

Whether the input coordinates may be bad.

NXY = I

The number of data points to transform.

XIN = ?(NXY)

Array of input $X_{IN}$ coordinates.

YIN = ?(NXY)

Array of input $Y_{IN}$ coordinates.

ID = I

Identifier for the compiled { $2 \rightarrow 2$} mapping to be applied.

XOUT = ?(NXY)

Array to receive the transformed $X_{OUT}$ coordinates.

YOUT = ?(NXY)

Array to receive the transformed $Y_{OUT}$ coordinates.

STATUS = I

Inherited error status.

Notes:

• There is a routine for each standard numerical data type x. Replace x by I (integer), R (real) or D (double precision).

• The number of input and output variables for the compiled mapping must both be equal to 2.