[R] get the first row ?

[Jim Lemon]

Hi Ragia,
This is a bit cryptic. "ISINFCluster" looks like a 50 element logical
vector with two TRUE values.
"all" looks like a 50 element numeric vector of counts for each value.
"firstclass" contains the 20th and 27th elements of "all", selected
with "ISINFCluster".
As "firstclass" is a two element named vector, there is only one "row"
and that includes the entire object.

Jim


On Sun, May 10, 2015 at 7:26 PM, Ragia Ibrahim <ragia11 at hotmail.com> wrote:
> Dear group
> kindly
>
> I have a logical data type
> ISINFCluster:
>     1     2     3     4     5     6     7     8     9    10    11    12    13    14
> FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>    15    16    17    18    19    20    21    22    23    24    25    26    27    28
> FALSE FALSE FALSE FALSE FALSE  TRUE FALSE FALSE FALSE FALSE FALSE FALSE  TRUE FALSE
>    29    30    31    32    33    34    35    36    37    38    39    40    41    42
> FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>    43    44    45    46    47    48    49    50
> FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> and I want to get just number of records from those that has the  value true, thus
>
>  firstclass<-     all[ISINCluster]
> where  all is numeric object
> 1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
>  1  1  2  1  3  1  1  2  5  4  1  6  8  1  2  1  3  3  2 13  1  4  2  4  7  1 14  1  1
> 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
>  1  1  2  2  1  1  2  2  2  9  3  1  1  3  6  1  4  1  3  9  2
>
> the firstclass containes the following
> firstclass
> 20 27
> 13 14
>
> And I could not get the first row..
> head(firstclass)
> 20 27
> 13 14
>
>
> how can I got it?
> thanks in advance
> Ragia
>
>
>
>
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