Re: [R] difference between max in summary table and max function
Thanks for the clarification. The basic error on my side was that I had
misunderstood the digits option in the summary, I had not understood that
even integer numbers might end up being rounded. Problem is solved now.
-Original Message-
From: Allen Bingham [mailto:aebingh...@gmail.com]
Sent: zaterdag 14 februari 2015 8:16
To: 'Martyn Byng'; r-help@r-project.org
Cc: Franckx Laurent
Subject: RE: [R] difference between max in summary table and max function
I thought I'd chime in ... submitting the following:
?summary
Provides the following documentation for the default for generalized argument
(other than class=data.frame, factor, or matrix):
## Default S3 method:
summary(object, ..., digits = max(3, getOption(digits)-3))
so passing along the object testrow w/o a corresponding argument for digits
... defaults to digits=4 (assuming your system has the same default option of
digits = 7 that mine does).
... and since later in the documentation it indicates that digits is an:
integer, used for number formatting with signif()
so noting that all of the values you reported from summary(testrow) all have
4 significant digits (including the Max. of 131500) (excepting the min value of
1), summary() is doing what it is documented to do.
... sorry for being pedantic --- but doing so to point out how helpful the ?
command can be sometimes.
Hope this helps.
__
Allen Bingham
Bingham Statistical Consulting
aebingh...@gmail.com
LinkedIn Profile: www.linkedin.com/pub/allen-bingham/3b/556/325
-Original Message-
From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Martyn Byng
Sent: Friday, February 13, 2015 3:15 AM
To: Franckx Laurent; r-help@r-project.org
Subject: Re: [R] difference between max in summary table and max function
Its a formatting thing, try
summary(testrow,digits=20)
-Original Message-
From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Franckx Laurent
Sent: 13 February 2015 11:00
To: r-help@r-project.org
Subject: [R] difference between max in summary table and max function
Dear all
I have found out that the max in the summary of an integer vector is not always
equal to the actual maximum of that vector. For example:
testrow - c(1:131509)
summary(testrow)
Min. 1st Qu. MedianMean 3rd Qu.Max.
1 32880 65760 65760 98630 131500
max(testrow)
[1] 131509
This has occurred both in a Windows and in a Linux environment.
Does this mean that the max value in the summary is only an approximation?
Best regards
Laurent Franckx, PhD
Senior researcher sustainable mobility
VITO NV | Boeretang 200 | 2400 Mol
Tel. ++ 32 14 33 58 22| mob. +32 479 25 59 07 | Skype: laurent.franckx |
laurent.fran...@vito.be | Twitter @LaurentFranckx
VITO Disclaimer: http://www.vito.be/e-maildisclaimer
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[R] difference between max in summary table and max function
Dear all I have found out that the max in the summary of an integer vector is not always equal to the actual maximum of that vector. For example: testrow - c(1:131509) summary(testrow) Min. 1st Qu. MedianMean 3rd Qu.Max. 1 32880 65760 65760 98630 131500 max(testrow) [1] 131509 This has occurred both in a Windows and in a Linux environment. Does this mean that the max value in the summary is only an approximation? Best regards Laurent Franckx, PhD Senior researcher sustainable mobility VITO NV | Boeretang 200 | 2400 Mol Tel. ++ 32 14 33 58 22| mob. +32 479 25 59 07 | Skype: laurent.franckx | laurent.fran...@vito.be | Twitter @LaurentFranckx VITO Disclaimer: http://www.vito.be/e-maildisclaimer __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
Re: [R] difference between max in summary table and max function
Its a formatting thing, try
summary(testrow,digits=20)
-Original Message-
From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Franckx Laurent
Sent: 13 February 2015 11:00
To: r-help@r-project.org
Subject: [R] difference between max in summary table and max function
Dear all
I have found out that the max in the summary of an integer vector is not always
equal to the actual maximum of that vector. For example:
testrow - c(1:131509)
summary(testrow)
Min. 1st Qu. MedianMean 3rd Qu.Max.
1 32880 65760 65760 98630 131500
max(testrow)
[1] 131509
This has occurred both in a Windows and in a Linux environment.
Does this mean that the max value in the summary is only an approximation?
Best regards
Laurent Franckx, PhD
Senior researcher sustainable mobility
VITO NV | Boeretang 200 | 2400 Mol
Tel. ++ 32 14 33 58 22| mob. +32 479 25 59 07 | Skype: laurent.franckx |
laurent.fran...@vito.be | Twitter @LaurentFranckx
VITO Disclaimer: http://www.vito.be/e-maildisclaimer
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.
This e-mail has been scanned for all viruses by Star.\ _...{{dropped:3}}
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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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.
Re: [R] difference between max in summary table and max function
I thought I'd chime in ... submitting the following:
?summary
Provides the following documentation for the default for generalized
argument (other than class=data.frame, factor, or matrix):
## Default S3 method:
summary(object, ..., digits = max(3, getOption(digits)-3))
so passing along the object testrow w/o a corresponding argument for
digits ... defaults to digits=4 (assuming your system has the same default
option of digits = 7 that mine does).
... and since later in the documentation it indicates that digits is an:
integer, used for number formatting with signif()
so noting that all of the values you reported from summary(testrow) all have
4 significant digits (including the Max. of 131500) (excepting the min value
of 1), summary() is doing what it is documented to do.
... sorry for being pedantic --- but doing so to point out how helpful the
? command can be sometimes.
Hope this helps.
__
Allen Bingham
Bingham Statistical Consulting
aebingh...@gmail.com
LinkedIn Profile: www.linkedin.com/pub/allen-bingham/3b/556/325
-Original Message-
From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Martyn Byng
Sent: Friday, February 13, 2015 3:15 AM
To: Franckx Laurent; r-help@r-project.org
Subject: Re: [R] difference between max in summary table and max function
Its a formatting thing, try
summary(testrow,digits=20)
-Original Message-
From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Franckx
Laurent
Sent: 13 February 2015 11:00
To: r-help@r-project.org
Subject: [R] difference between max in summary table and max function
Dear all
I have found out that the max in the summary of an integer vector is not
always equal to the actual maximum of that vector. For example:
testrow - c(1:131509)
summary(testrow)
Min. 1st Qu. MedianMean 3rd Qu.Max.
1 32880 65760 65760 98630 131500
max(testrow)
[1] 131509
This has occurred both in a Windows and in a Linux environment.
Does this mean that the max value in the summary is only an approximation?
Best regards
Laurent Franckx, PhD
Senior researcher sustainable mobility
VITO NV | Boeretang 200 | 2400 Mol
Tel. ++ 32 14 33 58 22| mob. +32 479 25 59 07 | Skype: laurent.franckx |
laurent.fran...@vito.be | Twitter @LaurentFranckx
VITO Disclaimer: http://www.vito.be/e-maildisclaimer
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.
This e-mail has been scanned for all viruses by Star.\ _...{{dropped:8}}
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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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.
