Is there an R function for rounding based on the size of the number?

Asked Dec 03 '19 at 20:58

Active Dec 04 '19 at 05:55

Viewed 199 times

I want the rounding of a set of numbers to automatically change as the numbers get larger. I am making barplot labels. Here is what currently shows up:

<39 
39 to 11564 
11564 to 23090 
23090 to 50893 
50893 to 89034 
89034 to 138900 
138900 to 183562

I think the number 39 is important, that is, I do not want to apply round() to all of the numbers equally because I do not want to change 39 to 40. I am writing a function so I need something that will adjust the amount it rounds based on the size of the number.

Ideal rounding:

<39 .         ( when 2 or 3 digits long, do not round) 
39 to 11600    ( when 5 digits long, round to 3 places) 
11600 to 23000  
23000 to 50900
50900 to 89000
89000 to 139000 ( when 6 digits long, round to 4 places)
139000 to 184000

does this already exist, where I can specify rounding by length? Or should I just write my own helper function to try to do this separately.

Thanks for the help! Best, Tessa

edited Dec 04 '19 at 05:55

Stidgeon

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asked Dec 03 '19 at 20:58

Tessa Danehy

2

You can generally control your cuts and/or boundaries, and it sounds like the `signif` function might come in handy. – r2evans Dec 03 '19 at 21:01
2

`signif(c(39, 11564, 23090, 50893, 89034, 138900, 183562), 3)` – d.b Dec 03 '19 at 21:06
1

Thank you! That worked perfectly. – Tessa Danehy Dec 03 '19 at 22:26
just cleaning up the number representation. the question doesn't really need much - I think it's quite clear without the edits. just trying to move it out of the queue. – Stidgeon Dec 04 '19 at 05:55

Is there an R function for rounding based on the size of the number?

0 Answers0