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Mathematica

Fitting Compiled function

Al Guy

Posted 11 years ago

I am trying to fit data with a compiled function, however I receive error message, I don't understand why: dat = Join[Table[{RandomReal[], RandomReal[]}, {i, 10}], Table[{RandomReal[{1, 2}], RandomReal[{1, 2}]}, {i, 10}]]; kk = Compile[{{a, _Real}, {b, _Real}, {x, _Real}}, a + b x] NonlinearModelFit[data, kk[a, b, x], {a, b}, x] CompiledFunction::cfsa: Argument a at position 1 should be a machine-size real number. >> Any ideas how to fix it? Thanks!

I am trying to fit data with a compiled function, however I receive error message, I don't understand why:

dat = Join[Table[{RandomReal[], RandomReal[]}, {i, 10}], 
   Table[{RandomReal[{1, 2}], RandomReal[{1, 2}]}, {i, 10}]];
kk = Compile[{{a, _Real}, {b, _Real}, {x, _Real}}, a + b x]
NonlinearModelFit[data, kk[a, b, x], {a, b}, x]

CompiledFunction::cfsa: Argument a at position 1 should be a machine-size real number. >>

Any ideas how to fix it? Thanks!

POSTED BY: Al Guy