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MathGroup Archive 2001

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Re: Map

  • To: mathgroup at smc.vnet.net
  • Subject: [mg29708] Re: Map
  • From: "Orestis Vantzos" <atelesforos at hotmail.com>
  • Date: Wed, 4 Jul 2001 03:08:32 -0400 (EDT)
  • Organization: National Technical University of Athens, Greece
  • References: <9hs1bt$bsd$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

instead f If[...blablabla...]& /@a use Map[If[...blablabla...]&,a,{2}]
f/@a maps f to the 1st layer of a ONLY. You want to map to the 2nd level of
the matrix (the 1st being the rows).
Orestis


<bbongiorno at attglobal.net> wrote in message
news:9hs1bt$bsd$1 at smc.vnet.net...
> I have not been successful in converting the following If Do routine,
> to a routine using the If Map function.
>
> Matrix
> a={{1,5,10},{25,0,2000},{55,5,2001}}
>
> If Do Routine that works
> y=0;
> Do[y=y+1;x=0;
>   Do[x=x+1;
>    a[[x,y]]=
>
If[a[[x,y]]<10,(StringJoin[ToString[0],ToString[a[[x,y]]]]),a[[x,y]]],
>    {Length[a]}],
>   {Length[Transpose[a]]}]
>
> If Map Routine that does not work
>
> If[# < 10, (StringJoin[ToString[0], ToString[#]]), # ] & /@ a
>
> Please help.
> Thanks,
>
> Benedetto Bongiorno
>
>




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