R help - Dec 2009 - Problem reading binaries created with fortran

Is it possible to read fortran binaries with R? I tried unsucessfully and my
understanding is that fortran write binaries with leading and trailing
bytes. I get numbers but not the right ones.
Thanks

ps: the binary I'm interested in reading is a MODFLOW output with a mix of
character, double and integers.

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On 17/12/2009 3:48 PM, kapo coulibaly wrote:
> Is it possible to read fortran binaries with R? I tried unsucessfully and
my
> understanding is that fortran write binaries with leading and trailing
> bytes. I get numbers but not the right ones.
> Thanks
> 
> ps: the binary I'm interested in reading is a MODFLOW output with a mix
of
> character, double and integers.
R can read most binary files, as long as you tell it the right format to 
read.  You need to consult the documentation of the program that 
produced the file to find out the format.  If it adds leading or 
trailing bytes, just tell R to skip over those --- but you need to know 
how much to skip.

Duncan Murdoch

On 17/12/2009 3:48 PM, kapo coulibaly wrote:
> Is it possible to read fortran binaries with R? I tried unsucessfully and
my
> understanding is that fortran write binaries with leading and trailing
> bytes. I get numbers but not the right ones.
> Thanks
> 
> ps: the binary I'm interested in reading is a MODFLOW output with a mix
of
> character, double and integers.
One other thing:  the hexView package does a very nice job of displaying 
the file, so you can work out what the structure is if the documentation 
is unclear (or nonexistent).

Duncan Murdoch

Duncan Murdoch helped me sort it out last Friday. Thanks to all who
responded.

On Fri, Dec 18, 2009 at 11:20 AM, Don MacQueen <macq@llnl.gov> wrote:
> However, source code is available at
>  http://water.usgs.gov/nrp/gwsoftware/modflow2005/modflow2005.html
> so it would seem that the details are available.
>
> -Don
>
>
> At 4:35 PM -0500 12/17/09, kapo coulibaly wrote:
>
>> Duncan,
>> I couldn't find clear details about the way fortran writes the
binaries. I
>> was hoping someone here has done it before. But the hexView package
seems
>> like a great idea i'll give it a shot.
>>
>> Thanks a bunch
>>
>> On Thu, Dec 17, 2009 at 4:02 PM, Duncan Murdoch
<murdoch@stats.uwo.ca
>> >wrote:
>>
>>   On 17/12/2009 3:48 PM, kapo coulibaly wrote:
>>>
>>>   Is it possible to read fortran binaries with R? I tried
unsucessfully
>>>> and
>>>>  my
>>>>  understanding is that fortran write binaries with leading and
trailing
>>>>  bytes. I get numbers but not the right ones.
>>>>  Thanks
>>>>
>>>>  ps: the binary I'm interested in reading is a MODFLOW
output with a mix
>>>> of
>>>>  character, double and integers.
>>>>
>>>>
>>>  One other thing:  the hexView package does a very nice job of
displaying
>>>  the file, so you can work out what the structure is if the
documentation
>>> is
>>>  unclear (or nonexistent).
>>>
>>>  Duncan Murdoch
>>>
>>>
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>>
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>> https://*stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide http://
>> *www.*R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
>
> --
> --------------------------------------
> Don MacQueen
> Environmental Protection Department
> Lawrence Livermore National Laboratory
> Livermore, CA, USA
> 925-423-1062
> --------------------------------------
>
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