Weibull Fit for Dataset in Excel

trnSet = datastore("trainingSet.csv");
trnSet.ReadSize = 'file';
trnSet.TreatAsMissing = 'na';
trnSetR = read(trnSet);
coloumn =  trnSetR.Properties.VariableNames;
trnSetR = table2array(trnSetR);
vec=zeros(1,height(trnSetR));

for k=1:height(trnSetR)
    vec(1,k)=trnSetR(k);
end

[parmHat,parmCI] = wblfit(vec)
disp(parmHat);

How do I do a Weibull analysis of a data colomun with 60000 data sets?

Above is what I have so far, but it is giving me an error at vec=zeros(1,height(trnSetR));

[Jeff Miller]

Looks like

trnSetR = table2array(trnSetR);

overwrites your original table with an array, and arrays don't have heights so the next line fails.

[Vimal Rathod]

Could you specify what error did you get exactly? I think height function will work on arrays as well.

[Nitya Sathish]

it says check for missing argument or incorrect argument data type in call to function 'height'.

Answer 1

[Vimal Rathod]

Hi,

From 2020b MATLAB supports height function for arrays as well, but it seems like you are using a previous version so its better to use another alternative to height function for array that is size function.

vec=zeros(1,size(trnSetR,1));

Using this line will help you run your script.

Refer to the following link to know more about size function

https://in.mathworks.com/help/matlab/ref/size.html

[Nitya Sathish]

Now it says

X must be a vector containing positive values.

Error in (line 11)

[parmHat,parmCI] = wblfit(vec);