How to write data to a binary file?

Question

LINGJUN KONG 2017-7-21

回答： Navaneetha C M 2018-1-18

I have a array data with 60,000*784*double. and I want to save them into a file by binary.

    file=fopen('myfilelocation\data.bin','w');
    fwrite(file,data,'double');
    fclose(file);

the file was created and the size of the file is also 376,320,000 bytes. which means there are 60,000*784*8 bytes data in the file.

but when I open the file by other software, the content is all Null.

what's the reason? is that because of my data is too large?

James Tursa 2017-7-21

编辑：James Tursa 2017-7-21

What do you get when you read it back into MATLAB? What about opening the file in a binary editor to see what is there?

Answer 1

Navaneetha C M 2018-1-18

The content of the file may not be parsed correctly by other software. You can use 'fread' function to read the contents of the file.