[R] iteration history

Robert Mcfadden robert-mcfadden at o2.pl
Mon Feb 6 21:59:32 CET 2006


Dear R Users
I would like to use optim function to optimize a function. I read help but I
couldn't find what I need: is it possible to get information after each
iteration, for example as there is in MATLAB:
                                                        Gradient's 
 Iteration  Func-count       f(x)        Step-size      infinity-norm
     0          24          388.976                            14
     1          72           385.67      0.0292637           16.8  
     2          96           383.54              1           4.15  
     3         120          383.412              1          0.108  
     4         144          383.412              1          0.002  
     5         168          383.412              1        0.00149  
     6         192          383.412              1      6.23e-005  
     7         216          383.412              1      1.01e-005  
   

It is useful when iteration takes long time - I know what's happen
I would appreciate any suggestion

Robert




More information about the R-help mailing list