R help - Feb 2013 - help with double looping

hi there,

I have a dataframe in the shape vA1, vA2,..., vA11, vB1, vB2,..., VB11,.......,
VP1, VP2,...., VP11 (so 16 times a sequence of 11 variables)
I am trying to build a double loop so that i can apply the function (i-1)*v(i)
to the first 10 variables, then the same for the next 10 variables, etc... 16
times.

I have tried the following with no luck:

iscores<-list()
for (j in seq(1,166,11)) 
  {
  for (i in j:(j+10))
    {iscores[[i-j+1]]=(i-j)*data[[i-j+1]]
    }
  }

any suggestion...?

many thanks,

Christel
 		 	   		  
	[[alternative HTML version deleted]]

Hello,

Maybe seq(1, 16*11, 11)? (16*11 is 176, not 166)


Hope this helps,

Rui Barradas

Em 08-02-2013 16:03, christel lacaze escreveu:
>
> hi there,
>
> I have a dataframe in the shape vA1, vA2,..., vA11, vB1, vB2,...,
VB11,......., VP1, VP2,...., VP11 (so 16 times a sequence of 11 variables)
> I am trying to build a double loop so that i can apply the function
(i-1)*v(i) to the first 10 variables, then the same for the next 10 variables,
etc... 16 times.
>
> I have tried the following with no luck:
>
> iscores<-list()
> for (j in seq(1,166,11))
>    {
>    for (i in j:(j+10))
>      {iscores[[i-j+1]]=(i-j)*data[[i-j+1]]
>      }
>    }
>
> any suggestion...?
>
> many thanks,
>
> Christel
>   		 	   		
> 	[[alternative HTML version deleted]]
>
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