Displaying 2 results from an estimated 2 matches for "tcscale".
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t_scale
2008 Dec 22
0
nlsrob fails with puzzling error message on input accepted by nls
...to get improved estimates. The model is well-behaved for the
parameters that come from nls - no huge values, NAs or infinities for
the values of the independent variables. But nlrob fails immediately
(on the first pass) with the error message
> pxe2 <- nlrob(dpx ~ peFnc(tradeSide, tradeSz, tcScale, szScale,
alpha), data=fitData, start= pxe$m$getAllPars(), trace=TRUE);
robust iteration 1
2138.747 : 2.19 2.31 0.45
Error in numericDeriv(form[[3]], names(ind), env) :
<--------------------
Missing value or an infinity produced when evaluating the model
<-------------------
With debug(...
2008 Dec 29
0
Serial Correlation Test for Short Time Series
...to get improved estimates. The model is well-behaved for the
parameters that come from nls - no huge values, NAs or infinities for
the values of the independent variables. But nlrob fails immediately
(on the first pass) with the error message
> pxe2 <- nlrob(dpx ~ peFnc(tradeSide, tradeSz, tcScale, szScale,
alpha), data=fitData, start= pxe$m$getAllPars(), trace=TRUE);
robust iteration 1
2138.747 : 2.19 2.31 0.45
Error in numericDeriv(form[[3]], names(ind), env) :
<--------------------
Missing value or an infinity produced when evaluating the model
<-------------------
With debug(),...