[R] Fill NA values in columns with values of another column

[Bert Gunter]

Sorry, not clear to me.

For group 8 in your example, do you want extract the values in column
1 that are not NA, i.e. one value, 6; or do you want to extract the
number of values -- that is, the count --  that are not NA, i.e. 1?

... and for group 5, would it be c(9,9) for the values; or 2 for the count?

Or something else entirely if I have completely misunderstood.

Either of the above are easy and quick to do. You can also just remove
 the NA's via a version of ?na.omit if that's what you want.

Of course, feel free to ignore this and wait for a more helpful
response from someone who understands your query better than I.

Cheers,
Bert

On Tue, Aug 27, 2024 at 3:45 PM Francesca PANCOTTO via R-help
<r-help using r-project.org> wrote:
>
> Dear Contributors,
> I have a problem with a database composed of many individuals for many
> periods, for which I need to perform a manipulation of data as follows.
> Here I report the procedure I need to do for the first 32 observations of
> the first period.
>
>
> cbind(VB1d[,1],s1id[,1])
>       [,1] [,2]
>  [1,]    6    8
>  [2,]    9    5
>  [3,]   NA    1
>  [4,]    5    6
>  [5,]   NA    7
>  [6,]   NA    2
>  [7,]    4    4
>  [8,]    2    7
>  [9,]    2    7
> [10,]   NA    3
> [11,]   NA    2
> [12,]   NA    4
> [13,]    5    6
> [14,]    9    5
> [15,]   NA    5
> [16,]   NA    6
> [17,]   10    3
> [18,]    7    2
> [19,]    2    1
> [20,]   NA    7
> [21,]    7    2
> [22,]   NA    8
> [23,]   NA    4
> [24,]   NA    5
> [25,]   NA    6
> [26,]    2    1
> [27,]    4    4
> [28,]    6    8
> [29,]   10    3
> [30,]   NA    3
> [31,]   NA    8
> [32,]   NA    1
>
>
> In column s1id, I have numbers from 1 to 8, which are the id of 8 groups ,
> randomly mixed in the larger group of 32.
> For each group, I want the value that is reported for only to group
> members, to all the four group members.
>
> For example, value 8 in first row , second column, is group 8. The value
> for group 8 of the variable VB1d is 6. At row 28, again for s1id equal to
> 8, I have 6.
> But in row 22, the value 8 of the second variable, reports a value NA.
> in each group is the same, only two values have the correct number, the
> other two are NA.
> I need that each group, identified by the values of the variable S1id,
> correctly report the number of variable VB1d that is present for just two
> group members.
>
> I hope my explanation is acceptable.
> The task appears complex to me right now, especially because I will need to
> multiply this procedure for x12x14 similar databases.
>
> Anyone has ever encountered a similar problem?
> Thanks in advance for any help provided.
>
> ----------------------------------
>
> Francesca Pancotto
>
> Associate Professor Political Economy
>
> University of Modena, Largo Santa Eufemia, 19, Modena
>
> Office Phone: +39 0522 523264
>
> Web: *https://sites.google.com/view/francescapancotto/home
> <https://sites.google.com/view/francescapancotto/home>*
>
>  ----------------------------------
>
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>
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