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Ebert,Timothy Aaron

2024-Apr-22 15:31 UTC

[R] x[0]: Can '0' be made an allowed index in R?

You could have negative indices. There are two ways to do this.
1) provide a large offset.
Offset <- 30
for (i in -29 to 120) { print(df[i+Offset])}


2) use absolute values if all indices are negative.
for (i in -200 to -1) {print(df[abs(i)])}

Tim



-----Original Message-----
From: R-help <r-help-bounces at r-project.org> On Behalf Of Peter Dalgaard
via R-help
Sent: Monday, April 22, 2024 10:36 AM
To: Rolf Turner <rolfturner at posteo.net>
Cc: R help project <r-help at r-project.org>; Hans W <hwborchers at
gmail.com>
Subject: Re: [R] x[0]: Can '0' be made an allowed index in R?

[External Email]

Heh. Did anyone bring up negative indices yet?

-pd
> On 22 Apr 2024, at 10:46 , Rolf Turner <rolfturner at posteo.net>
wrote:
>
>
> See fortunes::fortune(36).
>
> cheers,
>
> Rolf Turner
>
> --
> Honorary Research Fellow
> Department of Statistics
> University of Auckland
> Stats. Dep't. (secretaries) phone:
>         +64-9-373-7599 ext. 89622
> Home phone: +64-9-480-4619
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat/
> .ethz.ch%2Fmailman%2Flistinfo%2Fr-help&data=05%7C02%7Ctebert%40ufl.edu
> %7C79ca6aadcaee4aa3241308dc62d986f6%7C0d4da0f84a314d76ace60a62331e1b84
> %7C0%7C0%7C638493933686698527%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAw
>
MDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata>
wmv9OYcMES0nElT9OAKTdjBk%2BB55bQ7BjxOuaVVkPg4%3D&reserved=0
> PLEASE do read the posting guide
> http://www.r/
> -project.org%2Fposting-guide.html&data=05%7C02%7Ctebert%40ufl.edu%7C79
> ca6aadcaee4aa3241308dc62d986f6%7C0d4da0f84a314d76ace60a62331e1b84%7C0%
> 7C0%7C638493933686711061%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiL
> CJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=AP78X
> nfKrX6B0YVM0N76ty9v%2Fw%2BchHIytw33X7M9umE%3D&reserved=0
> and provide commented, minimal, self-contained, reproducible code.
--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000
Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com

______________________________________________
R-help at 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.

Spencer Graves

2024-Apr-22 17:01 UTC

head link

[R] x[0]: Can '0' be made an allowed index in R?

Convert to character:


goofy <- 1:9
names(goofy) <- (-4):4
goofy[as.character(0)]
goofy["-2"]


	  sg


On 4/22/24 10:31 AM, Ebert,Timothy Aaron wrote:> You could have negative indices. There are two ways to do this.
> 1) provide a large offset.
> Offset <- 30
> for (i in -29 to 120) { print(df[i+Offset])}
> 
> 
> 2) use absolute values if all indices are negative.
> for (i in -200 to -1) {print(df[abs(i)])}
> 
> Tim
> 
> 
> 
> -----Original Message-----
> From: R-help <r-help-bounces at r-project.org> On Behalf Of Peter
Dalgaard via R-help
> Sent: Monday, April 22, 2024 10:36 AM
> To: Rolf Turner <rolfturner at posteo.net>
> Cc: R help project <r-help at r-project.org>; Hans W <hwborchers
at gmail.com>
> Subject: Re: [R] x[0]: Can '0' be made an allowed index in R?
> 
> [External Email]
> 
> Heh. Did anyone bring up negative indices yet?
> 
> -pd
> 
>> On 22 Apr 2024, at 10:46 , Rolf Turner <rolfturner at posteo.net>
wrote:
>>
>>
>> See fortunes::fortune(36).
>>
>> cheers,
>>
>> Rolf Turner
>>
>> --
>> Honorary Research Fellow
>> Department of Statistics
>> University of Auckland
>> Stats. Dep't. (secretaries) phone:
>>          +64-9-373-7599 ext. 89622
>> Home phone: +64-9-480-4619
>>
>> ______________________________________________
>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> https://stat/
>>
.ethz.ch%2Fmailman%2Flistinfo%2Fr-help&data=05%7C02%7Ctebert%40ufl.edu
>> %7C79ca6aadcaee4aa3241308dc62d986f6%7C0d4da0f84a314d76ace60a62331e1b84
>> %7C0%7C0%7C638493933686698527%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAw
>>
MDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata>>
wmv9OYcMES0nElT9OAKTdjBk%2BB55bQ7BjxOuaVVkPg4%3D&reserved=0
>> PLEASE do read the posting guide
>> http://www.r/
>>
-project.org%2Fposting-guide.html&data=05%7C02%7Ctebert%40ufl.edu%7C79
>> ca6aadcaee4aa3241308dc62d986f6%7C0d4da0f84a314d76ace60a62331e1b84%7C0%
>> 7C0%7C638493933686711061%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiL
>>
CJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=AP78X
>> nfKrX6B0YVM0N76ty9v%2Fw%2BchHIytw33X7M9umE%3D&reserved=0
>> and provide commented, minimal, self-contained, reproducible code.
> 
> --
> Peter Dalgaard, Professor,
> Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000
Frederiksberg, Denmark
> Phone: (+45)38153501
> Office: A 4.23
> Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com
> 
> ______________________________________________
> R-help at 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.
> 
> ______________________________________________
> R-help at 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.

Peter Dalgaard

2024-Apr-23 13:03 UTC

head link

[R] x[0]: Can '0' be made an allowed index in R?

Doesn't sound like you got the point. x[-1] normally removes the first
element. With 0-based indices, this cannot work.

- pd 
> On 22 Apr 2024, at 17:31 , Ebert,Timothy Aaron <tebert at ufl.edu>
wrote:
> 
> You could have negative indices. There are two ways to do this.
> 1) provide a large offset.
> Offset <- 30
> for (i in -29 to 120) { print(df[i+Offset])}
> 
> 
> 2) use absolute values if all indices are negative.
> for (i in -200 to -1) {print(df[abs(i)])}
> 
> Tim
> 
> 
> 
> -----Original Message-----
> From: R-help <r-help-bounces at r-project.org> On Behalf Of Peter
Dalgaard via R-help
> Sent: Monday, April 22, 2024 10:36 AM
> To: Rolf Turner <rolfturner at posteo.net>
> Cc: R help project <r-help at r-project.org>; Hans W <hwborchers
at gmail.com>
> Subject: Re: [R] x[0]: Can '0' be made an allowed index in R?
> 
> [External Email]
> 
> Heh. Did anyone bring up negative indices yet?
> 
> -pd
> 
>> On 22 Apr 2024, at 10:46 , Rolf Turner <rolfturner at posteo.net>
wrote:
>> 
>> 
>> See fortunes::fortune(36).
>> 
>> cheers,
>> 
>> Rolf Turner
>> 
>> --
>> Honorary Research Fellow
>> Department of Statistics
>> University of Auckland
>> Stats. Dep't. (secretaries) phone:
>>        +64-9-373-7599 ext. 89622
>> Home phone: +64-9-480-4619
>> 
>> ______________________________________________
>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> https://stat/
>>
.ethz.ch%2Fmailman%2Flistinfo%2Fr-help&data=05%7C02%7Ctebert%40ufl.edu
>> %7C79ca6aadcaee4aa3241308dc62d986f6%7C0d4da0f84a314d76ace60a62331e1b84
>> %7C0%7C0%7C638493933686698527%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAw
>>
MDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata>>
wmv9OYcMES0nElT9OAKTdjBk%2BB55bQ7BjxOuaVVkPg4%3D&reserved=0
>> PLEASE do read the posting guide
>> http://www.r/
>>
-project.org%2Fposting-guide.html&data=05%7C02%7Ctebert%40ufl.edu%7C79
>> ca6aadcaee4aa3241308dc62d986f6%7C0d4da0f84a314d76ace60a62331e1b84%7C0%
>> 7C0%7C638493933686711061%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiL
>>
CJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=AP78X
>> nfKrX6B0YVM0N76ty9v%2Fw%2BchHIytw33X7M9umE%3D&reserved=0
>> and provide commented, minimal, self-contained, reproducible code.
> 
> --
> Peter Dalgaard, Professor,
> Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000
Frederiksberg, Denmark
> Phone: (+45)38153501
> Office: A 4.23
> Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com
> 
> ______________________________________________
> R-help at 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.
> 
> ______________________________________________
> R-help at 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.
-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com

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