Hi,

I'm using the `skimr`

package, and I added two summary functions (`iqr_na_rm`

, i.e., a function which computes the interquartile range by preliminarily removing any `na`

value in the variable we're skimming, and `median_na_rm`

, the equivalent function for the median) to the list of summary functions for the function `skim`

. However, by default these new summary functions (called `skimmers`

in `skimr`

documentation) appear at the end of the table. Instead, I'd like `median`

and `iqr`

to appear after `mean`

and `sd`

. Reprex:

```
library(skimr)
#>
#> Attaching package: 'skimr'
#> The following object is masked from 'package:stats':
#>
#> filter
library(dplyr)
#>
#> Attaching package: 'dplyr'
#> The following objects are masked from 'package:stats':
#>
#> filter, lag
#> The following objects are masked from 'package:base':
#>
#> intersect, setdiff, setequal, union
library(ggplot2)
iqr_na_rm <- function(x) IQR(x, na.rm = TRUE)
median_na_rm <- function(x) median(x, na.rm = TRUE)
skim_with(numeric = list(p50 = NULL, median = median_na_rm, iqr = iqr_na_rm),
integer = list(p50 = NULL, median = median_na_rm, iqr = iqr_na_rm))
msleep %>%
group_by(vore) %>%
skim(sleep_total)
#> Skim summary statistics
#> n obs: 83
#> n variables: 11
#> group variables: vore
#>
#> ── Variable type:numeric ───────────────────────────────────────────────────────────────────────────────────
#> vore variable missing complete n mean sd p0 p25 p75 p100
#> carni sleep_total 0 19 19 10.38 4.67 2.7 6.25 13 19.4
#> herbi sleep_total 0 32 32 9.51 4.88 1.9 4.3 14.22 16.6
#> insecti sleep_total 0 5 5 14.94 5.92 8.4 8.6 19.7 19.9
#> omni sleep_total 0 20 20 10.93 2.95 8 9.1 10.93 18
#> <NA> sleep_total 0 7 7 10.19 3 5.4 8.65 12.15 13.7
#> hist median iqr
#> ▃▇▂▇▆▃▂▃ 10.4 6.75
#> ▆▇▁▂▂▆▇▅ 10.3 9.92
#> ▇▁▁▁▁▁▃▇ 18.1 11.1
#> ▆▇▂▁▁▁▁▂ 9.9 1.83
#> ▃▃▁▁▃▇▁▇ 10.6 3.5
```

^{Created on 2019-03-14 by the reprex package (v0.2.1)}

As you can see, `median`

and `iqr`

are printed and the end of the table, after the sparkline histogram. I'd like them to be printed after `sd`

and before `p0`

. Is it possible?