Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2012

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: good list

  • To: mathgroup at smc.vnet.net
  • Subject: [mg125116] Re: good list
  • From: Bill Rowe <readnews at sbcglobal.net>
  • Date: Wed, 22 Feb 2012 05:31:30 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com

On 2/21/12 at 6:15 AM, Roberto.Brambilla at rse-web.it (Brambilla
Roberto Luigi (RSE)) wrote:

>I have a function  myfunc[x] (of some complexity) and I want to
>build the list of its values in the interval (a<=x<=b) with step
>dx=(b-a)/nstep

>nstep=100;
>mylist=Table[{x,myfunc[x],{x,a,b,(b-a)/nstep}];

>According to the input value, sometimes myfunc[x] is not able to
>give a numeric result

>(in my case a singular difficult numerical integral) . In others
>cases it works fine.

>My question is how to build the list with only the good cases.

Try

mylist=Cases[Table[{x,myfunc[x],{x,a,b,(b-a)/nstep}],{_,_?NumericQ}]




  • Prev by Date: Can you pass a matrix or a list into a module?
  • Next by Date: Re: How I can I optimize the following code in order to get very short running time
  • Previous by thread: Re: good list
  • Next by thread: Re: good list