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Day of Year... Too lazy for a two-line solution... [message #62105]

Fri, 22 August 2008 11:49

MarioIncandenza
Messages: 231
Registered: February 2005

Senior Member

Hi IDL Wizards,

I handle all date manipulation in my routines using JULDAY(), CALDAT,
and the C() format code. Going from Day-of-Year to Julian Date is
easy:

Julian_Date = JULDAY(1,Day_Of_Year,Year,0,0,0)

Getting Day-of-Year back out requires this, *unless you can do
better*:

CALDAT,Julian_Date,Null,Null,Year
Day_Of_Year = Julian_Date - JULDAY(12,31,Year-1,0,0,0)

I would really like a one-line solution with no stray variables.
Anyone have one?

--Edward H.

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