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Colin Edgar


Active since 2015

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Timestamp char or cell into double matrix
I have a script to discover missing time periods in large data sets that begin with a Timestamp (TS). The TS is in form of "yyy...

environ 3 ans ago | 2 answers | 0

2

answers

Question


Formatted Datetime char values stored as numbers
t1=datetime(2012,1,1,0,0,0); t2=datetime(2012,12,31,23,30,0); TSarray=t1:minutes(30):t2; %this makes a timestamp array...

plus de 3 ans ago | 1 answer | 0

1

answer

Answered
How to populate complete time series with incomplete data
Complete solution to problem in OP: %Change input 'data' and 'full' to separate HH and MM into separate columns %So Year...

presque 6 ans ago | 0

Question


How to populate complete time series with incomplete data
I have time series data with skipped periods that I wish to place onto a complete time stamp array. Rather than mm/dd format I ...

presque 6 ans ago | 2 answers | 0

2

answers

Answered
Make this script faster
Here is my solution, takes only ~1sec to run per file (~2MB 12 x 18000). This is for the example data I posted above, but with ...

presque 6 ans ago | 0

Answered
Uneven time series averaging
http://www.mathworks.com/matlabcentral/answers/252435-group-mean-for-repeated-samples I adapted this approach to work here. ...

presque 6 ans ago | 0

| accepted

Question


Uneven time series averaging
Need to get hourly averages of data which have uneven frequency over a given hour. Id is the 'sample' which is repeated over an...

environ 6 ans ago | 1 answer | 0

1

answer

Question


row by row matrix building
Quick question here I hope. Am modifying some code, can't see why this won't work: j=1 while ischar (tline); ...

environ 6 ans ago | 1 answer | 0

1

answer

Question


Group mean for repeated samples
Have a looping sample with index 1-5 through time, I need averages for each period and index (not simple group-wise mean of id 1...

environ 6 ans ago | 2 answers | 0

2

answers