Problem reading a binary file in MATLAB

I have a binary file that I have converted from .csv to .bin. The .csv file is attached.

I am using the following code to read the .bin file in MATLAB:

fn = 'sample.bin';
fid = fopen(fn, 'r');
dat = fread(fid, '*int16');
fclose(fid);

I have tried both int16 and int32 in the fread function. Still, MATLAB does not read the file correctly.

Original .csv: -1966965

Converted .bin: 00101101 00110001 00111001 00110110 00110110 00111001 00110110 00110101

MATLAB reads the .bin file as:

808529968

825241905

825241632

808464433

808460337

808530225

807416112

808530224

540029233

825307184

808530224

825241632

808464689

808460337

825241905

807415857

808530224

You can check the correct conversion on this website:

https://www.rapidtables.com/convert/number/binary-to-ascii.html

What should I change in my code so that MATLAB reads the .bin file correctly?

[rsneha rani]

Also check this site: binary to ascii

Answer 1

[Walter Roberson]

A = [808529968
825241905
825241632
808464433
808460337
808530225
807416112
808530224
540029233
825307184
808530224
825241632
808464689
808460337
825241905
807415857
808530224]
char(typecast(uint32(A),'uint8')).'

ans =

'00101101 00110001 00111001 00110110 00110110 00111001 00110110 00110'

Answer 2

[Sulaymon Eshkabilov]

Hi,

Here is how you should write your data into a binary file and read it from the binary file.

% Writing in abinary file
A = -1966965;
FID1 = fopen('AA.bin', 'w+');
fwrite(FID1, A, 'float64');                  % Precision is float64
fclose(FID1);
%% Reading from binary file:
clearvars
FID2=fopen('AA.bin', 'r'); 
[AAnew, count]=fread(FID2, [1, 8], 'float64'); % Precision is float64

Good luck.