[gradsusr] Read binary files written from R

[Sujata Mandke]

Hello!

  If you have "xconv" in your machine,
then you can view your binary
data in xconv and actually view data
 in the binary file.
This will make sure if binary file has correct values.

"xconv" is free and is available in any linux OS.
With best regards
Dr. Sujata Mandke
scientist, IITM,PUNE


----- Original Message -----
From: Kiswendsida Hyacinthe Guigma <K.Guigma at sussex.ac.uk>
To: GrADS Users Forum <gradsusr at gradsusr.org>
Sent: Wed, 11 Apr 2018 20:07:56 +0530 (IST)
Subject: Re: [gradsusr] Read binary files written from R

Dear Dr. Sujata,
I replaced all missing values in R by -99999 before to write in a binary file. So I think this is not the cause of the problem.
Thank you for your help,

GUIGMA
________________________________________
From: gradsusr [gradsusr-bounces at gradsusr.org] on behalf of Sujata Mandke [amin at tropmet.res.in]
Sent: Wednesday, April 11, 2018 1:36 PM
To: GrADS Users Forum
Subject: Re: [gradsusr] Read binary files written from R

Hello!

   Please check if value of undefine is correct.
That could create problem such as you mentioned.

with best regards
Dr. Sujata Mandke
scientist, Indian Institute of Tropical Meteorology
PUNE, INDIA

----- Original Message -----
From: Kiswendsida Hyacinthe Guigma <K.Guigma at sussex.ac.uk>
To: gradsusr at gradsusr.org
Sent: Tue, 10 Apr 2018 17:18:39 +0530 (IST)
Subject: [gradsusr] Read binary files written from R

Hi everyone!
I have some meteorological data that I processed using R and I would like to plot them in Grads. Then, I wrote binary files from R and I took time to check that they are well written in the right order. I also wrote a control file. GrADS is able to read the file but it gives so bad values. When I try to display them for example, I get my data range and it is completely different from what I have in R. Actually my data in R span from -0.005 to 0.05 while in Grads I get -5e+37 to 3e+38 !!!
This is my control file code:

DSET    /home/k/kg/kg312/eof.dat
TITLE   EMPIRICAL ORTHOGONAL FUNCTIONS
UNDEF   -99999
XDEF 61 LINEAR -20.5 1
YDEF 12 LINEAR 5.5 1
ZDEF 1 LINEAR 1 1
TDEF 1 LINEAR 16FEB2018 1DY
VARS 1
EOF1 1 99 EOF1
ENDVARS

I thought the problem could be due to a byte swapping. Then I included successively all of the OPTIONS related to that: byteswapped, little_endian and big_endian but none of them solved my problem.
Both my R and Grads are run on the same machine on Apollo HPC. I used Grads Version 2.1.0 and  Version 2.0.1.oga.1. The R version is R3.4.0 .

Any help is appreciated!

GUIGMA
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