round up a number to 10^4

[Wendy]

Hi all,

I have a list of numbers, e.g., X = c(60593.23, 71631.17, 75320.1), and want to round them  so the output is Y = c(60000, 80000, 80000). I tried Y<-round(X,-4), but it gives me Y = c(60000, 70000, 80000). Do anybody know how to round up a number to 10^4?

Thank you in advance.

Wendy

[David Winsemius]

On Nov 1, 2011, at 1:07 PM, Wendy wrote:

> Hi all,
>
> I have a list of numbers, e.g., X = c(60593.23, 71631.17, 75320.1),  
> and want
> to round them  so the output is Y = c(60000, 80000, 80000).

Under what notion of "rounding" would that be the result?

> I tried
> Y<-round(X,-4), but it gives me Y = c(60000, 70000, 80000). Do  
> anybody know
> how to round up a number to 10^4?
>
> Thank you in advance.


--
David Winsemius, MD
Heritage Laboratories
West Hartford, CT

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[Michael Weylandt]

Could you divide by your desired order of magnitude, use ceiling and then re-multiply?

Michael

On Nov 1, 2011, at 3:42 PM, David Winsemius <[hidden email]> wrote:

>
> On Nov 1, 2011, at 1:07 PM, Wendy wrote:
>
>> Hi all,
>>
>> I have a list of numbers, e.g., X = c(60593.23, 71631.17, 75320.1), and want
>> to round them  so the output is Y = c(60000, 80000, 80000).
>
> Under what notion of "rounding" would that be the result?
>
>> I tried
>> Y<-round(X,-4), but it gives me Y = c(60000, 70000, 80000). Do anybody know
>> how to round up a number to 10^4?
>>
>> Thank you in advance.
>
>
> --
> David Winsemius, MD
> Heritage Laboratories
> West Hartford, CT
>
> ______________________________________________
> [hidden email] mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

[Clint Bowman]

Or does the middle number have two digits switched? 76131.17 would
round up to 80000 very nicely.

--
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On Tue, 1 Nov 2011, David Winsemius wrote:

>
> On Nov 1, 2011, at 1:07 PM, Wendy wrote:
>
>> Hi all,
>>
>> I have a list of numbers, e.g., X = c(60593.23, 71631.17, 75320.1), and
>> want
>> to round them  so the output is Y = c(60000, 80000, 80000).
>
> Under what notion of "rounding" would that be the result?
>
>> I tried
>> Y<-round(X,-4), but it gives me Y = c(60000, 70000, 80000). Do anybody know
>> how to round up a number to 10^4?
>>
>> Thank you in advance.
>
>
>

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

[Bert Gunter]

Yes, I agree with David that this looks like an error.

However, for fun, one might ask: what is the fewest number of R elementary
math operations that would produce such a result -- this might be good for
clever 6th or 7th graders, for example.

For here, I leave this as an exercise for the reader.

-- Bert

On Tue, Nov 1, 2011 at 12:42 PM, David Winsemius <[hidden email]>wrote:

>
> On Nov 1, 2011, at 1:07 PM, Wendy wrote:
>
>  Hi all,
>>
>> I have a list of numbers, e.g., X = c(60593.23, 71631.17, 75320.1), and
>> want
>> to round them  so the output is Y = c(60000, 80000, 80000).
>>
>
> Under what notion of "rounding" would that be the result?
>
>  I tried
>> Y<-round(X,-4), but it gives me Y = c(60000, 70000, 80000). Do anybody
>> know
>> how to round up a number to 10^4?
>>
>> Thank you in advance.
>>
>
>
> --
> David Winsemius, MD
> Heritage Laboratories
> West Hartford, CT
>
> ______________________________**________________
> [hidden email] mailing list
> https://stat.ethz.ch/mailman/**listinfo/r-help<https://stat.ethz.ch/mailman/listinfo/r-help>
> PLEASE do read the posting guide http://www.R-project.org/**
> posting-guide.html <http://www.R-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>

--

Bert Gunter
Genentech Nonclinical Biostatistics

Internal Contact Info:
Phone: [phone]
Website:
http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm

        [[alternative HTML version deleted]]

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[jholtman]

Also be aware of the IEEE standard of rounding to even:

> round(61000, -4)
[1] 60000
> round(62000, -4)
[1] 60000
> round(65000, -4)
[1] 60000
> round(66000, -4)
[1] 70000
> round(76000, -4)
[1] 80000
> round(75000, -4)
[1] 80000
>
notice what 65000 rounds to and what 75000 rounds to.
On Tue, Nov 1, 2011 at 4:13 PM, Bert Gunter <[hidden email]> wrote:

> Yes, I agree with David that this looks like an error.
>
> However, for fun, one might ask: what is the fewest number of R elementary
> math operations that would produce such a result -- this might be good for
> clever 6th or 7th graders, for example.
>
> For here, I leave this as an exercise for the reader.
>
> -- Bert
>
> On Tue, Nov 1, 2011 at 12:42 PM, David Winsemius <[hidden email]>wrote:
>
>>
>> On Nov 1, 2011, at 1:07 PM, Wendy wrote:
>>
>>  Hi all,
>>>
>>> I have a list of numbers, e.g., X = c(60593.23, 71631.17, 75320.1), and
>>> want
>>> to round them  so the output is Y = c(60000, 80000, 80000).
>>>
>>
>> Under what notion of "rounding" would that be the result?
>>
>>  I tried
>>> Y<-round(X,-4), but it gives me Y = c(60000, 70000, 80000). Do anybody
>>> know
>>> how to round up a number to 10^4?
>>>
>>> Thank you in advance.
>>>
>>
>>
>> --
>> David Winsemius, MD
>> Heritage Laboratories
>> West Hartford, CT
>>
>> ______________________________**________________
>> [hidden email] mailing list
>> https://stat.ethz.ch/mailman/**listinfo/r-help<https://stat.ethz.ch/mailman/listinfo/r-help>
>> PLEASE do read the posting guide http://www.R-project.org/**
>> posting-guide.html <http://www.R-project.org/posting-guide.html>
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
>
>
> --
>
> Bert Gunter
> Genentech Nonclinical Biostatistics
>
> Internal Contact Info:
> Phone: [phone]
> Website:
> http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm
>
>        [[alternative HTML version deleted]]
>
> ______________________________________________
> [hidden email] mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

--
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.

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[Nordlund, Dan (DSHS/RDA)]

Bert,

How do you define "elementary"?  And, do we play this like "Name That Tune"?  "Bert, I can do that calculation in X operations."  Or, maybe like Jeopardy,  "What is the number X?"  Or maybe we could play "Are You Smarter Than a Seventh-Grader?"  I'm just asking.


Dan

Daniel J. Nordlund
Washington State Department of Social and Health Services
Planning, Performance, and Accountability
Research and Data Analysis Division
Olympia, WA 98504-5204

> -----Original Message-----
> From: [hidden email] [mailto:r-help-bounces@r-
> project.org] On Behalf Of Bert Gunter
> Sent: Tuesday, November 01, 2011 1:13 PM
> To: David Winsemius
> Cc: [hidden email]; Wendy
> Subject: Re: [R] round up a number to 10^4
>
> Yes, I agree with David that this looks like an error.
>
> However, for fun, one might ask: what is the fewest number of R
> elementary
> math operations that would produce such a result -- this might be good
> for
> clever 6th or 7th graders, for example.
>
> For here, I leave this as an exercise for the reader.
>
> -- Bert
>
> On Tue, Nov 1, 2011 at 12:42 PM, David Winsemius
> <[hidden email]>wrote:
>
> >
> > On Nov 1, 2011, at 1:07 PM, Wendy wrote:
> >
> >  Hi all,
> >>
> >> I have a list of numbers, e.g., X = c(60593.23, 71631.17, 75320.1),
> and
> >> want
> >> to round them  so the output is Y = c(60000, 80000, 80000).
> >>
> >
> > Under what notion of "rounding" would that be the result?
> >
> >  I tried
> >> Y<-round(X,-4), but it gives me Y = c(60000, 70000, 80000). Do
> anybody
> >> know
> >> how to round up a number to 10^4?
> >>
> >> Thank you in advance.
> >>
> >
> >
> > --
> > David Winsemius, MD
> > Heritage Laboratories
> > West Hartford, CT
> >
> > ______________________________**________________
> > [hidden email] mailing list
> > https://stat.ethz.ch/mailman/**listinfo/r-
> help<https://stat.ethz.ch/mailman/listinfo/r-help>
> > PLEASE do read the posting guide http://www.R-project.org/**
> > posting-guide.html <http://www.R-project.org/posting-guide.html>
> > and provide commented, minimal, self-contained, reproducible code.
> >
>
>
>
> --
>
> Bert Gunter
> Genentech Nonclinical Biostatistics
>
> Internal Contact Info:
> Phone: [phone]
> Website:
> http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-
> biostatistics/pdb-ncb-home.htm
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> [hidden email] mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> and provide commented, minimal, self-contained, reproducible code.

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

[djmuseR]

Works in the newly released 2.14.0:

> X = c(60593.23, 71631.17, 75320.1)
> round(X, -4)
[1] 60000 70000 80000

Dennis


On Tue, Nov 1, 2011 at 10:07 AM, Wendy <[hidden email]> wrote:

> Hi all,
>
> I have a list of numbers, e.g., X = c(60593.23, 71631.17, 75320.1), and want
> to round them  so the output is Y = c(60000, 80000, 80000). I tried
> Y<-round(X,-4), but it gives me Y = c(60000, 70000, 80000). Do anybody know
> how to round up a number to 10^4?
>
> Thank you in advance.
>
> Wendy
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/round-up-a-number-to-10-4-tp3964394p3964394.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> [hidden email] mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

______________________________________________
[hidden email] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.