How to split time series array into subarrays according to sampling rate?

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Phoenix98
Phoenix98 2018-7-24
评论： Krithika A 2018-7-25
Hi, I have a data acquired from ECG sensor sampled at 128 sps I want to make subarrays each contains 256 sample?

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Krithika A
Krithika A 2018-7-24
编辑：Krithika A 2018-7-24
sps = 128;
n = 768; % 128*6 = 768, so a 6s long signal with 128 sps
x = randn(1,n);
y = reshape(x, [], sps*2);
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Guillaume
Guillaume 2018-7-25
It should be indeed
reshape(x, [], 50)
to divide the data into 50 columns or even better:
reshape(x, 256, [])
to split the data into columns of 256 elements. In each case, each subarray ends up as a column.

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