problems with reading file 1

[milenko76]

I have thispen(23, file='vel.mod', form='unformatted',
+ status='old')
Velocity model is vel.mod but Intel 11.1 sees this binary data as Amiga Sound Tracker Audio.Why?
Of course ,when I try to read it later it is not possible.
File vel.mod is created by separate application this way:
open(unit=36, file='vel.mod', form='unformatted')
do 130 k=1,nz
do 130 j=1,ny
do 131 i=1,nx
131 veli(i)=vel(i,j,k)*1000.
130 write(36) (veli(i),i=1,nx)
c
stop
end
I am using x86-64 bit Intel,compiler 11.1

 

[GerritGroot]

It's your OS that recognizes it as a good old nostalgic AmigaSoundTracker file, not your fortran compiler, so if the file contains other (possible more boring) data, fortran shouldn't have any problem with that.

You have to look for the error in the code itself. Make sure the byte size is ok, many commercial files have mixed ascii, binary and mixed byte sizes in the same binary.

 

[milenko76]

How should I make sure that the byte size is ok?If you can give me any links,that would be great.

 

[GerritGroot]

Did you write the vel.mod file yourself or does it come from another application. You must know its binary format before you can even try to read it.

Look here for an implementation:

http://www.tek-tips.com/viewthread.cfm?qid=1508674&page=10

Other people have been answering to me in that post when I had similar problems.