MathGroup Archive 2004

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

Search the Archive

Re: Counting Runs


data={1,1,1,-1,1,1,1,1,1,-1,-1,-1,-1,1};
Count[Split@data,{#,___},{1}]&/@Union@data
{#,Count[Split@data,{#,___},{1}]}&/@Union@data

{2,3}
{{-1,2},{1,3}}

Bobby

On Thu, 4 Nov 2004 01:50:22 -0500 (EST), Gregory Lypny <gregory.lypny at videotron.ca> wrote:

>
>
> Looking for an elegant way to count runs to numbers in a series.
> Suppose I have a list of ones and negative ones such as
> 	v={1,1,1,-1,1,1,1,1,1,-1,-1,-1,-1,1}.
> I'd like to create a function that counts the number of runs of 1s and
> -1s, which in this case is 3 and 2.
>
> 	Greg
>
>
>
>



-- 
DrBob at bigfoot.com
www.eclecticdreams.net


  • Prev by Date: Re: Counting Runs
  • Next by Date: Re: Plotting scattergram
  • Previous by thread: Re: Counting Runs
  • Next by thread: Re: Counting Runs