I2CMPLX-Copies an array into the imaginary part of a complex structure

Description:

I2CMPLX copies the data from a specified file (usually not a complex one) into the imaginary part of an existing complex data file, usually one created by R2CMPLX.

Parameters:

IDATA

The name of an existing file that contains a data array that is to become the imaginary part of an existing complex data structure.

CDATA

The name of the existing complex data structure whose imaginary part is to be set. CDATA may be the same as IDATA (which will have to be a complex structure), in which case one gets the odd effect of setting the imaginary part equal to the previous value of the modulus. Normally, CDATA is a separate file recently created by R2CMPLX.

Source comments:

 I 2 C M P L X

 Sets the imaginary part of an existing complex data structure.
 The complex data structure will probably have been created in the
 first instance by R2CMPLX, which leaves the imaginary part zero.
 I2CMPLX takes the data array from a specified file (usually not a
 complex one - note that if it is complex, it is the modulus that
 is used) and uses it to form the imaginary part of the complex
 data.

 Command parameters -

 IDATA       (Character) The data structure containing the array
             that is to form the imaginary part of the complex data.
             That is, the data array of IDATA becomes the
             imaginary data array of the output complex structure.
 CDATA       (Character) The resulting complex data structure.  Note
             that this is an already existing structure.

                                         KS / AAO 8th Sept 1986