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Unformatted data portability: Digital UNIX-->Windows 95 [message #11239]

Thu, 19 March 1998 00:00

r.s.eckman
Messages: 1
Registered: March 1998

Junior Member

I'm trying to do some post-processing of model results on a Windows95
Intel-based platform using IDL. The model is running on a DEC Alpha
machine running Digital UNIX. In IDL on the DEC platform, we can open
the output files using the "/f77_unformatted" qualifier. While the IDL
manual has a nice discussion of the way Fortran programs write files
on UNIX machines, I don't see any discussion relating to portability of
these files to, say, a Windows95 platform. When I try to open the same
file on the Windows platform using IDL, I need to insert a "junk" variable
at the start and end of the logical record to get it to read properly.

For example, the file could be read on the DEC Alpha/UNIX platform using:

openr,1,'file.dat',/f77
readu,1,a,b,c

On the Windows95 platform, I seem to need to do the following:

openr,1,'file.dat'
readu,1,junk,a,b,c,junk

Is there any way around modifying all of our IDL codes on the Windows platform?
Of course, the "/f77" keyword in the open statement won't work under Windows
95. In a more general sense, is this "almost" binary portability unique to the
Digital UNIX/Windows95(or NT) combination or could I have written the file from
a SUN or SGI and read it on a Windows95 Intel-based machine in the same way?

Thanks for any information.

Richard Eckman
NASA Langley Research Center
Hampton, VA
r.s.eckman@larc.nasa.gov

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[Message index]

		Unformatted data portability: Digital UNIX-->Windows 95 By: r.s.eckman on Thu, 19 March 1998 00:00
		Re: Unformatted data portability: Digital UNIX-->Windows 95 By: dors on Mon, 23 March 1998 00:00
		Re: Unformatted data portability: Digital UNIX- By: wmc on Mon, 23 March 1998 00:00
		Re: Unformatted data portability: Digital UNIX-->Windows 95 By: rivers on Fri, 20 March 1998 00:00

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