I have a dataframe with coordinates (SWEREF\_99, proj 3006) and realized that a lot of the coordinates have the wrong format.

For northern coordinates, they always have seven digits before a comma, and eastern coordinates have six digits before comma, then decimal digits. Like: 6789654.234 (north). However, my coordinates look like this; 6789654234. This means that I want to enter a comma/dot between digit 4 and 2.

I have tried `formatC` and `format` but when I use that I add multiple commas, such as 678.965.423.4 or just adds zeros after deciamal.

test <- format(data$North, 7, nsmall = 0)

Here´s a dataframe with imaginary coordinates, but it describes my data well.

```
data <- data.frame(North = c(678645345, 675836578, 6573645.786), East = c(354674.47, 37465434, 4263546))

```

As you can see, some of my coordinates look good, they have seven digits for north coordinates, and six digits for east coordinates. So these I don't want to change, but only the ones that do not include a comma.

Have anyone experience the same problem?