Timeline for What is the role of the pattern object in this implementation?
Current License: CC BY-SA 3.0
9 events
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| Jun 25, 2015 at 19:55 | comment | added | Albert Retey |
@abrentonc: Mathematica is at its core a symbolic system, so it will evaluate a function for non-numeric arguments, e.g. f[x_]:=x^3;y=.;f[y]. If you call something like NDSolve which only handle those parameters as numeric input, then you have to restrict the function pattern to numeric parameters.
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| Jun 25, 2015 at 19:13 | comment | added | abrentonc | Fresh kernel didn't help | |
| Jun 25, 2015 at 19:09 | comment | added | Enrique Pérez Herrero | Quit the Kernel and try again | |
| Jun 25, 2015 at 19:08 | comment | added | abrentonc | I think I understand pattern matching. I'm just not sure I understand why the kernel would ever attempt to evaluate the expression with non-numerical arguments int the model[a_,t_] expression and why this results in the error that I mention. | |
| Jun 25, 2015 at 19:06 | history | edited | Enrique Pérez Herrero | CC BY-SA 3.0 |
added 189 characters in body
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| Jun 25, 2015 at 18:57 | comment | added | Enrique Pérez Herrero | reference.wolfram.com/language/tutorial/…, The definition applies only when the variable has a numerical argument. | |
| Jun 25, 2015 at 18:48 | comment | added | abrentonc | Why does the NonlinearModelFit seem to be running the function on non-numbers though? | |
| Jun 25, 2015 at 18:00 | review | Low quality posts | |||
| Jun 25, 2015 at 18:12 | |||||
| Jun 25, 2015 at 17:40 | history | answered | Enrique Pérez Herrero | CC BY-SA 3.0 |