How to output multiple types of binary files in one file

Question

수환 김 2022-3-24

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1679274-how-to-output-multiple-types-of-binary-files-in-one-file

编辑： Chunru 2022-3-25

I'm trying to output the DF to a binary file with one line. I'll show you a simple example.(In reality, it consists of hundreds of millions of rows of data.).

A1 should be uint32_t, B2 should be float32, and C3 should be uint32_t.
'Little endian encoding' is required.

DF=

A1 B2 C3

1 7 13

2 8 14

3 9 15

4 10 16

5 11 17

6 12 18

The expected result after output is as follows.

Binary file =

1(uint32) 7(float32) 13(uint32) 2(uint32) 8(float32) 14(uint32) 3(uint32) 9(float32) 15(uint32) 4(uint32) 10(float32) 16(uint32) 5(uint32) 11(float32) 17(uint32) 6(uint32) 12(float32) 18(uint32)

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Answer 1

Chunru 2022-3-24

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1679274-how-to-output-multiple-types-of-binary-files-in-one-file#answer_925709

编辑：Chunru 2022-3-25

在 MATLAB Online 中打开

x = [
 1  7  13
 2  8  14
 3  9  15
 4 10  16
 5 11  17
 6 12  18];
fid = fopen("test.bin", "w", "ieee-le");
for i=1:size(x, 1)
    % 1(uint32) 7(float32) 13(uint32)
    fwrite(fid, x(i, 1), "uint32");
    fwrite(fid, x(i, 2), "float32");
    fwrite(fid, x(i, 3), "uint32");
end
fclose(fid);
dir 
.         ..        test.bin  