Taking the first bit (i.e. even vs odd)

Hi.

I need to read a binary data file with this information: 3600000 Samples, 8-Bits, Start Location: 112. I used the command '*uint8'.

But I have to take the first bit (i.e. even vs odd) to convert to binary 0-1 from each of the 1000 bytes. Then down sampling from 1000 to 200, by taking every 5th bit.

Can you help with that, please?

Answer 1

[Ameer Hamza]

Why not take the last bit of every fifth byte, to begin with. For example, something like this

f = fopen('filename.bin', 'r');
data = fread(f, inf, '*uint8');
data_5 = data(1:5:end);
bits = rem(data_5, 2);

[Ameer Hamza]

rem(data_5, 2) return 0 if number is even and 1 if number is odd. So it is essentially giving the least significant bit in the numbers, which is what you want according to the question.

[Eliza]

Thank you so much.