hi,
I applied coxph to my matrix of 300 samples and 215 variables and got the
following error
Error in fitter(X, Y, strats, offset, init, control, weights = weights, :
NA/NaN/Inf in foreign function call (arg 6)
In addition: Warning message:
Ran out of iterations and did not converge in: fitter(X, Y, strats, offset,
init, control, weights = weights,
26% of time data is censored and here is the result of density of the matrix
x y
Min. :-6.943 Min. :-5.258e-18
1st Qu.:-4.086 1st Qu.: 2.341e-04
Median :-1.228 Median : 4.584e-03
Mean :-1.228 Mean : 8.740e-02
3rd Qu.: 1.630 3rd Qu.: 5.857e-02
Max. : 4.487 Max. : 7.099e-01
------------------------------------------------------------------------------
in another trial of the same matrix, the number of var is reduced to 188. the
variables were normalized (mean = 0 and standard dev = 1 for each variable) and
here is the result of density
x y
Min. :-8.1532 Min. :4.571e-16
1st Qu.:-4.3334 1st Qu.:1.043e-04
Median :-0.5136 Median :1.102e-03
Mean :-0.5136 Mean :6.538e-02
3rd Qu.: 3.3062 3rd Qu.:5.373e-02
Max. : 7.1260 Max. :4.337e-01
I get still the warning
Warning message:
Ran out of iterations and did not converge in: fitter(X, Y, strats, offset,
init, control, weights = weights,
but not error in fitter ....
the number of iterations is 20 and didn't converge. saw from coefficient values
and their p-value
Why do I get this message?
Look forward to your reply
carol
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