Error when using: parmHat = wblfit(x)

Question

krist oim 2022-9-8

回答： Jeff Miller 2022-9-9

Have attached the 52705x1 double I used. Getting the following error messages and don't understand as to why:

Error using fzero (line 214)

Second argument must be finite.

Error in evfit (line 192)

[sigmahat, lkeqnval, err] = fzero(@lkeqn, bnds, options, x0, freq, wgtmeanUnc);

Error in wblfit (line 80)

parmhatEV = evfit(log(x),alpha,censoring,freq,options);

Image Analyst 2022-9-8

Evidently bnds is infinite. What value(s) does it have? Let me know after you've watched this:

krist oim 2022-9-8

I can not answer that as I don't know and I've just used the function wblfit(x) incorporated in matlab

Answer 1

Jeff Miller 2022-9-9

The problem is that your x vector has some nan's in it, and wblfit can't handle those. Try

y = x(~isnan(x));
parmHat = wblfit(y)
% parmHat =
%        10.09       2.1733