Solution from:
https://stackoverflow.com/questions/25167780/output-2-array-values-to-a-text-file-using-idl
IDL> x = findgen(10)
IDL> y = findgen(10) * 2
IDL> print, transpose([[x], [y]]), format='(2F)'
--Joel
IDL print two arrays side by side
Published inIDL hints
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