Write binary file in Matlab

4 次查看（过去 30 天）
Haoliang Yu
Haoliang Yu 2019-9-13
评论： Image Analyst 2019-9-14
Hello,
I have a binary data generated by Fortran, I am able to read my data:
fid = fopen('inflow.data0000');
sep1=fread(fid,1,'float');
nynzitime=fread(fid,3,'int32');
sep=fread(fid,1,'int32');
RAW_read = fread(fid, 3*n1*n2,'float32');
RAW = reshape(RAW_read, [n1,n2,3]);
fclose(fid);
I need to make some changes in the data and then write it out as a binary file for Fortran.
so I did this:
fileID = fopen('newinflow.data0000')
fwrite(fileID,sep1,'single');
fwrite(fileID,nynzitime,'int32');
fwrite(fileID,sep,'int32');
fwrite(fileID,RAW_read,'float32');
fclose(fileID);
then when Fortran reads the data:
namel='newinflow.data0000'
open(30,file=namel,form='unformatted')
read(30)n2al,n3l
read(30)qal(0:n2al+1,1:n3l,1:3)
close(30)
error message shows "corrupted file". I realized that it is a header/format related issue, but I am not familar with binary file, tried a few different things, no luck yet.
I attached a 'good' binary data, please see if you know how to read and write it properly for Fortran.
Thank you for your time.

请先登录，再回答此问题。

回答（2 个）

James Tursa
James Tursa 2019-9-13
Can you read and write as “STREAM” in your FORTRAN compiler? No header stuff to worry about.
Image Analyst
Image Analyst 2019-9-13
Maybe try changing the ENDIAN?
  4 个评论
显示 2更早的评论
Haoliang Yu
Haoliang Yu 2019-9-13
Oh, I did, but forgot that part when I paste the code here...also I worked around this problem by changing the Fortran write and read code to STREAM.
Image Analyst
Image Analyst 2019-9-14
A paste operation shouldn't drop out characters that were copied into the clipboard. You might want to investigate that.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Fortran with MATLAB 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by