Structure of GrADs Binary Data File

Eric Altshuler ela at COLA.IGES.ORG
Mon May 5 18:35:51 EDT 2008

Dear Shun Jie Liu,

Unless special indications are made in the data descriptor file, grads assumes the data ordering is:

Time -> Variable -> Z -> Y -> X

so you are correct except you have X and Y in the wrong order.

Best regards,

Eric L. Altshuler
Assistant Research Scientist
Center for Ocean-Land-Atmosphere Studies
4041 Powder Mill Road, Suite 302
Calverton, MD 20705-3106

E-mail: ela at
Phone: (301) 902-1257
Fax: (301) 595-9793

----- Original Message -----
From: "Shun Jie Liu" <shun.jie.liu at INVENIA.CA>
Sent: Monday, May 5, 2008 4:28:58 PM GMT -05:00 US/Canada Eastern
Subject: Structure of GrADs Binary Data File

Hello GrADs Users,
I want to confirm something about the binary file structure.
I read the documentation on the GrADs website and just want to make sure my idea is right

For example, a 5D data (Time, X, Y, Z, Variables)

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