Reading a binary data file

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KatherineS 2019-6-7

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https://ww2.mathworks.cn/matlabcentral/answers/466031-reading-a-binary-data-file

评论： Walter Roberson 2019-6-8

Hello,

I am trying to import and read a binary data file of the following format in MATLAB. I need to read in all the data, however at this point im just trying to read in the first 4 char, but i keep getting a blank array. Nothing seems to be working and I have been stuck for days.

Thanks in advance for your help!

fid = fopen('file.dat','r');
if fid <0
    error('error opening file %s\n file.dat')
end
Program_label = fread(fid,[1 4],*char)
fclose(fid);
m = memmapfile('GSS1_t023_is_phcorr_ideal.dat');
m.Format

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回答（1 个）

Jan 2019-6-7

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/466031-reading-a-binary-data-file#answer_378293

在 MATLAB Online 中打开

fid = fopen('file.dat','r');
if fid <0
    error('error opening file %s\n file.dat')
end
Program_label   = fread(fid, [1 4], '*char');   % With quotes
Program_version = fread(fid, 1, 'single');
Type_label      = fread(fid, [1 4], '*char');
nCols           = fread(fid, 1, 'uint32');
nRows           = fread(fid, 1, 'uint32');
...
fclose(fid);