When working with data (e.g., in data.frame) the user can control displaying digits by using
```
options(digits=3)
```
and listing the data.frame like this.
```
ttf.all
```
When the user needs to paste the data in Excell like this
```
write.table(ttf.all, 'clipboard', sep='\t',row.names=F)
```
The digits parameter is ignored and numbers are not rounded.
See nice output
```
> ttf.all
year V1.x.x V1.y.x ratio1 V1.x.y V1.y.y ratioR V1.x.x V1.y.x ratioAL V1.x.y V1.y.y ratioRL
1 2006 227 645 35.2 67 645 10.4 150 645 23.3 53 645 8.22
2 2007 639 1645 38.8 292 1645 17.8 384 1645 23.3 137 1645 8.33
3 2008 1531 3150 48.6 982 3150 31.2 755 3150 24.0 235 3150 7.46
4 2009 1625 3467 46.9 1026 3467 29.6 779 3467 22.5 222 3467 6.40
```
But what is in excel (clipboard) is not rounded. How to control in in `write.table()`?
Comment control number of decimal digits in write.table() output?
Re: Comment control number of decimal digits in write.table() output?
You can use the function `format()` as in:
```
write.table(format(ttf.all, digits=2), 'clipboard', sep='\t',row.names=F)
```
`format()` is a generic function that has methods for many classes, including data.frames. Unlike `round()`, it won't throw an error if your dataframe is not all numeric. For more details on the formatting options, see the help file via `?format`
```
write.table(format(ttf.all, digits=2), 'clipboard', sep='\t',row.names=F)
```
`format()` is a generic function that has methods for many classes, including data.frames. Unlike `round()`, it won't throw an error if your dataframe is not all numeric. For more details on the formatting options, see the help file via `?format`