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what is i in idl 4.0 ? [message #16650] Mon, 09 August 1999 00:00
John Stanly Videen is currently offline  John Stanly Videen
Messages: 2
Registered: June 1999
Junior Member
Help,

Does anyone know what the system variable representation for i is in idl
4.0?

[ where i = sqrt(-1) ]

In idl 3.6, it used to be !j, but this doesn't seem to work in 4.0....

eg. this code works in 3.6, but not 4.0:

phase=atan(imaginary(data_ref), float(data_ref))
temp=exp(- phase * !j )
data=temp*data

john

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