Error using tsa function - Error using matlab.internal.math.interp1 Sample points must be unique.
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While I've allready succesfully used the tsa function in the past, I stumbled upon the error as shown below, which I'm not able to get rid of. Intuitively I tried using the unique function to exclude possible duplicates in my TachoPulseTimes vector, but this didn't appear to solve the issue. I also tried swapping the sampling frequency argument fs for the corresponding time vector to make sure both the sampling time vector and tacho pulse times would start and end on equal time stamps, but with no luck. Any help would be much appriciated given I'm completly stuck at the moment.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1672696/image.png)
load('TSA_DATA.mat')
AccData = upsample(tsaData.AccData,100);
fs = tsaData.SampFreq;
TachoPulseTimes = tsaData.TachoPulseTimes;
pprTacho = tsaData.pprTacho;
accDataTsaRaw = tsa(AccData,fs,TachoPulseTimes,"PulsesPerRotation",pprTacho);
Note: The accelerometer data was downsampled with a factor 100 to be able to include the data as attachment
Many thanks in advance,
Lars
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Mathieu NOE
2024-4-19
编辑:Mathieu NOE
2024-4-19
hehe
there is only one difference between the two mat files , but it was enough to create the issue
>> load('TSA_DATA_OLD.mat') => AccData: [1×16501 double]
>> load('TSA_DATA.mat') => AccData: [1×254977 single]
so in the second case , don't forget to convert from single to double before calling tsa
AccData = upsample(double(tsaData.AccData),100)
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