Test function argument with VectorQ and NumericQ
- To: mathgroup at smc.vnet.net
- Subject: [mg107305] Test function argument with VectorQ and NumericQ
- From: Oliver Fochler <janitor048 at googlemail.com>
- Date: Mon, 8 Feb 2010 07:54:52 -0500 (EST)
Hi there,
in order to get my NIntegrate running properly it seems that I need to
ensure that my functions actually take numeric arguments (without
NIntegrate trying to do some symbolic stuff before).
For a simple case something like
f[x_?NumericQ] := (stuff)
seems to work fine. However, I do use vectors (lists) as function
arguments, i.e. f[x_, y_]:= (stuff) needs to be called as f[ {1,2,3},
4].
How do I test this for numerical values? I know that I can use
VectorQ[ x, NumericQ ] to check whether x is a vector that contains
only numeric values.
But how do I combine this into a pattern test, that can be used in an
argument list?
I would appreciate any help!
Cheers,
Oliver
- Follow-Ups:
- Re: Test function argument with VectorQ and NumericQ
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- From: Leonid Shifrin <lshifr@gmail.com>
- Re: Test function argument with VectorQ and NumericQ
- From: Patrick Scheibe <pscheibe@trm.uni-leipzig.de>
- Re: Test function argument with VectorQ and NumericQ