Module will crash if few values are given

[vladaman]

Following example will exit with an error (crash). This error can't be even handled with try/catch:

const arima = require('arima');

let pVals = [0, 0, 0, 0, 12, 9.55, 12];

const [pred, errors] = arima(pVals, 2, {
    method: 0,
    optimizer: 6,
    p: 3,
    q: 0,
    d: 1,
    verbose: true
});
console.log(pred);

[zemlyansky]

I've just updated the package with the latest ctsa code. Now it has a new object-oriented API, but still supports the old functional one. After updating arima to 0.2.1 your example produces such output:

Calling ARIMA as a function will be deprecated in the future
Warning : The Matrix system does not have a unique solutionWarning : The Matrix system does not have a unique solutionWarning : The Matrix system does not have a unique solution
 SARIMAX summary: 


 Exit Status 
Return Code : 1 
Exit Message : Probable Success

  ARIMA Seasonal Order : ( 3, 1, 0) * (0, 0, 0) 

Coefficients        Value               Standard Error       

AR1              -0.176149           0.371344             
AR2              0.121743            0.359776             
AR3              0.024819            0.56106              

MEAN             0                    

SIGMA^2          24.0706              

ESTIMATION METHOD : CSS-MLE

OPTIMIZATION METHOD : L-BFGS

EQUATION FORM : x[t] + 0.176149*x[t - 1] - 0.121743*x[t - 2]- 0.024819*x[t - 3]= a[t] 

Log Likelihood : -18.0911 

AIC criterion : 44.1821 

[ 11.567994462089692, 11.881554977033822 ] [ 24.070645510870207, 40.40814531575646 ]