Creating Timetables: Error Message in SampleRate

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FW
FW 2019-4-18
评论： Peter Perkins 2019-5-3
Hello, I am trying to use a suggested function to generate a timetable with a sampling frequency of 200 Hz.
tt = timetable(rand(12,1),'SampleRate', 200)
I get an error: Invalid parameter name: SampleRate. This is MATLAB 2017b.
How do we get the desired sample rate?
Thanks.

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Adam Danz
Adam Danz 2019-4-18
编辑：Adam Danz 2019-4-19
Here's a link to the 2017b documentation for timetable().
https://www.mathworks.com/help/releases/R2017b/matlab/ref/timetable.html?searchHighlight=timetable&s_tid=doc_srchtitle
You'll see that there is no 'SampleRate' property. That property appeared first in r2018b.
Here's how to achive your example for releases before and after 2018b.
% 2018b or more recent
data = rand(12,1);
sampleRate = 200; %hz
tt = timetable(data,'SampleRate', sampleRate);
% prior to 2018b
timeSamples = seconds(0 : 1/sampleRate : (size(data)-1)/sampleRate);
tt = timetable(timeSamples', data);
  2 个评论
Peter Perkins
Peter Perkins 2019-5-3
Adam is right, but usually this
seconds((0:(size(data)-1))/sampleRate)
is better numerically.

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