fcas80
1
Hi. I am trying to fill a data frame with unequal size vectors. I would be OK with NAs, but the data frame is not reading all my elements.

df <- data.frame(matrix(ncol = 5, nrow=0))

x <- c(1,2,3)

df <- rbind(df, x)

y <- c(4,5,6,7)

df <- rbind(df,y)

z <- c(8,9,10,11,12)

df <- rbind(df,z)

df

X1 X2 X3

1 1 2 3

2 4 5 6

3 8 9 10

Leon
2
Try running these commands:

```
cbind(c(1,2,3), c(4,5,6,7), c(8,9,10,11,12))
rbind(c(1,2,3), c(4,5,6,7), c(8,9,10,11,12))
```

Then if you inspect the input, you will see what is called re-cycling.

fcas80
3
Thanks Leon, I see what you are saying. Do you have a solution for my problem?

Before a solution can be offered I think you would need to specify the way you would have desired these entries to be bound together ?

fcas80
5
Hi, I would a hope since I defined my df with 5 columns, it would look like the following. (I do understand recycling)

1 2 3 NA NA

4 5 6 7 NA

8 9 10 11 12

Make all vectors of the same length beforehand

```
library(purrr)
x <- c(1,2,3)
y <- c(4,5,6,7)
z <- c(8,9,10,11,12)
vector_list <- list(x, y, z)
longest <- max(map_int(vector_list, length))
map_dfr(vector_list,
~ {
length(.x) <- longest
.x %>% set_names(paste0("X", 1:longest))
})
#> # A tibble: 3 × 5
#> X1 X2 X3 X4 X5
#> <dbl> <dbl> <dbl> <dbl> <dbl>
#> 1 1 2 3 NA NA
#> 2 4 5 6 7 NA
#> 3 8 9 10 11 12
```

^{Created on 2021-10-01 by the reprex package (v2.0.1)}

1 Like

system
Closed
8
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