Re: Replace non-numeric values in a list
- To: mathgroup at smc.vnet.net
- Subject: [mg88790] Re: [mg88745] Replace non-numeric values in a list
- From: Syd Geraghty <sydgeraghty at mac.com>
- Date: Fri, 16 May 2008 05:35:10 -0400 (EDT)
- References: <200805151150.HAA23460@smc.vnet.net>
Hi Adel, a really straightforward method would be (assuming your list explicitly contains letters and numbers only as in your example) In[1]= list = {a, 1, 2, b, 3}; In[2]= isletter[a_] := If[LetterQ[ToString[a]], True, False] In[3]= newlist = Table[If[isletter[list[[i]]], 0, list[[i]]], {i, Length[list]}] Out[4]= {0, 1, 2, 0, 3} HTH, Syd Geraghty B.Sc, M.Sc. sydgeraghty at mac.com My System Mathematica 6.0.2.1 for Mac OS X x86 (64 - bit) (March 13, 2008) MacOS X V 10.5.2 MacBook Pro 2.33 Ghz Intel Core 2 Duo 2GB RAM On May 15, 2008, at 4:50 AM, Adel Elsabbagh wrote: > Dear all, > > I have a list that contains numeric and non-numeric values > list = { a, 1, 2, b, 3}; > How can I replace non-numeric values with zeros? > Thanks! > > -- > Adel Elsabbagh > http://www.svlab-asu.com/aelsabbagh.html > >
- References:
- Replace non-numeric values in a list
- From: "Adel Elsabbagh" <aelsabbagh@gmail.com>
- Replace non-numeric values in a list