Segmenting EEG data into 1 second segments

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Shamus Sim
Shamus Sim 2020-8-11
评论： Cris LaPierre 2020-8-12
I have a EEG timeseries called ts which has a total length of 600 seconds.
Common Properties:
Name: 'unnamed'
Time: [239766x1 double]
TimeInfo: tsdata.timemetadata
Data: [1x1x239766 double]
DataInfo: tsdata.datametadata
I would like to split the data tsout into 1s windows. For instance ts1 has data from 0-1s and ts2 has data from 1-2s and so forth.
This is the code I have used.
for i=1:600
ts{i} = getsampleusingtime(ts,i-1,i)
end
This is the error I have got.
Unable to perform assignment because brace indexing is not supported for variables of this type.

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采纳的回答

Cris LaPierre
Cris LaPierre 2020-8-11
The issue is the curly braces. Use parentheses instead.
for i=1:600
tsout(i) = getsampleusingtime(ts,i-1,i);
end
  2 个评论
Shamus Sim
Shamus Sim 2020-8-12
I get tsout to be a timeseries object which has 1x600 timeseries.
However, this is how I would like to change the data. I would like to split the data tsout into 1s windows. For instance ts1 has data from 0-1s and ts2 has data from 1-2s and so forth.
Thank you Cris!
Cris LaPierre
Cris LaPierre 2020-8-12
That is what you get out. The question, I guess, is what format would you like it in? Here, you would access the first second of data using tsout(1).Data, the second second using tsout(2).Data, etc.
I did notice that getsampleusingtime includes data with timeval >= starttime and <= endtime. This means data on the edges are included in 2 bins - when the time is the endtime in one group and the starttime in another.

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