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jimdare

2009-Nov-03 22:02 UTC

[R] Weird operator behaviour

Hi,

I have a dataset called 'fish'.  fish$Species returns extract 1.  When I
use
fish$Species != c("CRA","PHC"), i.e. I want all species
except "CRA" and
"PHC", I get extract 2 which is blatantly wrong.  Can anyone see what
I'm
doing wrong? 

Regards,
James 


EXTRACT 1
> fish$Species  [1] ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ATO
ATO
 [19] ATO ATO ATO ATO ATO ATO BIG BIG BIG BIG BIG BIG BIG BIG BIG BIG BIG
BIG
 [37] BIG BIG BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS
CRA
 [55] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
CRA
 [73] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
CRA
 [91] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
CRA
[109] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
CRA
[127] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
CRA
[145] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
CRA
[163] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
CRA
[181] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
CRA
[199] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
CRA
[217] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
CRA
[235] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
CRA
[253] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
CRA
[271] CRA CRA CRA CRA CRA CRA CRA CRA MAK MAK MAK MAK MAK MAK MAK MAK MAK
MAK
[289] MAK MAK MAK MAK MAK MOO MOO MOO MOO MOO MOO MOO MOO MOO MOO MOO MOO
MOO
[307] MOO MOO PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC
PHC
[325] PHC PHC PHC POS POS POS POS POS POS POS POS POS POS POS PTO PTO PTO
PTO
[343] PTO PTO PTO PTO PTO PTO PTO PTO PTO PTO PTO RBM RBM RBM RBM RBM RBM
RBM
[361] RBM RBM RBM RBM RBM RBM RBM RBM SKJ SKJ SKJ SKJ SKJ SKJ SKJ SKJ SKJ
SKJ
[379] SKJ SKJ SKJ SKJ SKJ STM STM STM STM STM STM STM STM STN STN STN STN
STN
[397] STN STN STN STN STN STN STN STN STN STN STN STN STN STN STN STN STN
STN
[415] SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO TOR
TOR
[433] TOR TOR TOR TOR TOR TOR YFN YFN YFN YFN YFN YFN YFN YFN YFN YFN YFN
YFN
[451] YFN YFN YFN YFN
17 Levels: ALB ATO BIG BWS CRA MAK MOO PHC POS PTO RBM SKJ STM STN SWO ...
YFN

EXTRACT 2
> fish$Species != c("CRA","PHC")  [1]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
 [13]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
 [25]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
 [37]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
 [49]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
 [61] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
 [73] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
 [85] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
 [97] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
[109] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
[121] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
[133] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
[145] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
[157] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
[169] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
[181] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
[193] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
[205] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
[217] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
[229] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
[241] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
[253] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
[265] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
TRUE
[277] FALSE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
[289]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
[301]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE FALSE  TRUE
FALSE
[313]  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE
FALSE
[325]  TRUE FALSE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
[337]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
[349]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
[361]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
[373]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
[385]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
[397]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
[409]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
[421]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
[433]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
TRUE
[445]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE

-- 
View this message in context:
http://old.nabble.com/Weird-operator-behaviour-tp26163604p26163604.html
Sent from the R help mailing list archive at Nabble.com.

Jorge Ivan Velez

2009-Nov-03 22:05 UTC

head link

[R] Weird operator behaviour

Hi Jim,

Take a look at ?"%in%", especially its first example.

HTH,
Jorge


On Tue, Nov 3, 2009 at 5:02 PM, jimdare <> wrote:
>
> Hi,
>
> I have a dataset called 'fish'.  fish$Species returns extract 1. 
When I
> use
> fish$Species != c("CRA","PHC"), i.e. I want all species
except "CRA" and
> "PHC", I get extract 2 which is blatantly wrong.  Can anyone see
what I'm
> doing wrong?
>
> Regards,
> James
>
>
> EXTRACT 1
>
> > fish$Species
>  [1] ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ATO
> ATO
>  [19] ATO ATO ATO ATO ATO ATO BIG BIG BIG BIG BIG BIG BIG BIG BIG BIG BIG
> BIG
>  [37] BIG BIG BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS
> CRA
>  [55] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
>  [73] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
>  [91] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [109] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [127] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [145] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [163] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [181] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [199] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [217] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [235] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [253] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [271] CRA CRA CRA CRA CRA CRA CRA CRA MAK MAK MAK MAK MAK MAK MAK MAK MAK
> MAK
> [289] MAK MAK MAK MAK MAK MOO MOO MOO MOO MOO MOO MOO MOO MOO MOO MOO MOO
> MOO
> [307] MOO MOO PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC
> PHC
> [325] PHC PHC PHC POS POS POS POS POS POS POS POS POS POS POS PTO PTO PTO
> PTO
> [343] PTO PTO PTO PTO PTO PTO PTO PTO PTO PTO PTO RBM RBM RBM RBM RBM RBM
> RBM
> [361] RBM RBM RBM RBM RBM RBM RBM RBM SKJ SKJ SKJ SKJ SKJ SKJ SKJ SKJ SKJ
> SKJ
> [379] SKJ SKJ SKJ SKJ SKJ STM STM STM STM STM STM STM STM STN STN STN STN
> STN
> [397] STN STN STN STN STN STN STN STN STN STN STN STN STN STN STN STN STN
> STN
> [415] SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO TOR
> TOR
> [433] TOR TOR TOR TOR TOR TOR YFN YFN YFN YFN YFN YFN YFN YFN YFN YFN YFN
> YFN
> [451] YFN YFN YFN YFN
> 17 Levels: ALB ATO BIG BWS CRA MAK MOO PHC POS PTO RBM SKJ STM STN SWO ...
> YFN
>
> EXTRACT 2
>
> > fish$Species != c("CRA","PHC")
>  [1]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
>  [13]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
>  [25]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
>  [37]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
>  [49]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
>  [61] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
>  [73] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
>  [85] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
>  [97] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [109] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [121] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [133] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [145] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [157] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [169] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [181] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [193] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [205] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [217] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [229] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [241] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [253] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [265] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [277] FALSE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [289]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [301]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE FALSE  TRUE
> FALSE
> [313]  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE
> FALSE
> [325]  TRUE FALSE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [337]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [349]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [361]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [373]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [385]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [397]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [409]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [421]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [433]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [445]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
>
> --
> View this message in context:
> http://old.nabble.com/Weird-operator-behaviour-tp26163604p26163604.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help@r-project.org 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.
>
	[[alternative HTML version deleted]]

Erik Iverson

2009-Nov-03 22:07 UTC

head link

[R] Weird operator behaviour

Argument recycling is coming into play here with !=.  I am guessing you want

! fish$Species %in% c("CRA", "PHC")

?

Best Regards,
Erik Iverson > -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at
r-project.org]
> On Behalf Of jimdare
> Sent: Tuesday, November 03, 2009 4:02 PM
> To: r-help at r-project.org
> Subject: [R] Weird operator behaviour
> 
> 
> Hi,
> 
> I have a dataset called 'fish'.  fish$Species returns extract 1. 
When I
> use
> fish$Species != c("CRA","PHC"), i.e. I want all species
except "CRA" and
> "PHC", I get extract 2 which is blatantly wrong.  Can anyone see
what I'm
> doing wrong?
> 
> Regards,
> James
> 
> 
> EXTRACT 1
> 
> > fish$Species
>   [1] ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ATO
> ATO
>  [19] ATO ATO ATO ATO ATO ATO BIG BIG BIG BIG BIG BIG BIG BIG BIG BIG BIG
> BIG
>  [37] BIG BIG BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS
> CRA
>  [55] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
>  [73] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
>  [91] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [109] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [127] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [145] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [163] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [181] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [199] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [217] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [235] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [253] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA
> CRA
> [271] CRA CRA CRA CRA CRA CRA CRA CRA MAK MAK MAK MAK MAK MAK MAK MAK MAK
> MAK
> [289] MAK MAK MAK MAK MAK MOO MOO MOO MOO MOO MOO MOO MOO MOO MOO MOO MOO
> MOO
> [307] MOO MOO PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC
> PHC
> [325] PHC PHC PHC POS POS POS POS POS POS POS POS POS POS POS PTO PTO PTO
> PTO
> [343] PTO PTO PTO PTO PTO PTO PTO PTO PTO PTO PTO RBM RBM RBM RBM RBM RBM
> RBM
> [361] RBM RBM RBM RBM RBM RBM RBM RBM SKJ SKJ SKJ SKJ SKJ SKJ SKJ SKJ SKJ
> SKJ
> [379] SKJ SKJ SKJ SKJ SKJ STM STM STM STM STM STM STM STM STN STN STN STN
> STN
> [397] STN STN STN STN STN STN STN STN STN STN STN STN STN STN STN STN STN
> STN
> [415] SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO TOR
> TOR
> [433] TOR TOR TOR TOR TOR TOR YFN YFN YFN YFN YFN YFN YFN YFN YFN YFN YFN
> YFN
> [451] YFN YFN YFN YFN
> 17 Levels: ALB ATO BIG BWS CRA MAK MOO PHC POS PTO RBM SKJ STM STN SWO ...
> YFN
> 
> EXTRACT 2
> 
> > fish$Species != c("CRA","PHC")
>   [1]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
>  [13]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
>  [25]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
>  [37]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
>  [49]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
>  [61] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
>  [73] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
>  [85] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
>  [97] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [109] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [121] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [133] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [145] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [157] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [169] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [181] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [193] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [205] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [217] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [229] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [241] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [253] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [265] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE
> TRUE
> [277] FALSE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [289]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [301]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE FALSE  TRUE
> FALSE
> [313]  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE
> FALSE
> [325]  TRUE FALSE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [337]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [349]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [361]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [373]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [385]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [397]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [409]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [421]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [433]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> TRUE
> [445]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> 
> --
> View this message in context: http://old.nabble.com/Weird-operator-
> behaviour-tp26163604p26163604.html
> Sent from the R help mailing list archive at Nabble.com.
> 
> ______________________________________________
> R-help at r-project.org 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.

Peter Alspach

2009-Nov-03 22:09 UTC

head link

[R] Weird operator behaviour

Tena koe James

Have you tried something like !fish$Species%in%c('CRA','PHC')?

HTH ....

Peter Alspach 
> -----Original Message-----
> From: r-help-bounces at r-project.org 
> [mailto:r-help-bounces at r-project.org] On Behalf Of jimdare
> Sent: Wednesday, 4 November 2009 11:02 a.m.
> To: r-help at r-project.org
> Subject: [R] Weird operator behaviour
> 
> 
> Hi,
> 
> I have a dataset called 'fish'.  fish$Species returns extract 
> 1.  When I use fish$Species != c("CRA","PHC"), i.e. I
want
> all species except "CRA" and "PHC", I get extract 2
which is
> blatantly wrong.  Can anyone see what I'm doing wrong? 
> 
> Regards,
> James 
> 
> 
> EXTRACT 1
> 
> > fish$Species
>   [1] ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB ALB 
> ALB ALB ATO ATO  [19] ATO ATO ATO ATO ATO ATO BIG BIG BIG BIG 
> BIG BIG BIG BIG BIG BIG BIG BIG  [37] BIG BIG BWS BWS BWS BWS 
> BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS BWS CRA  [55] CRA CRA 
> CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA 
> CRA  [73] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA 
> CRA CRA CRA CRA CRA  [91] CRA CRA CRA CRA CRA CRA CRA CRA CRA 
> CRA CRA CRA CRA CRA CRA CRA CRA CRA [109] CRA CRA CRA CRA CRA 
> CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA [127] CRA 
> CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA 
> CRA CRA [145] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA 
> CRA CRA CRA CRA CRA CRA [163] CRA CRA CRA CRA CRA CRA CRA CRA 
> CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA [181] CRA CRA CRA CRA 
> CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA [199] 
> CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA 
> CRA CRA CRA [217] CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA 
> CRA CRA CRA CRA CRA CRA CRA [235] CRA CRA CRA CRA CRA CRA CRA 
> CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA [253] CRA CRA CRA 
> CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA CRA 
> [271] CRA CRA CRA CRA CRA CRA CRA CRA MAK MAK MAK MAK MAK MAK 
> MAK MAK MAK MAK [289] MAK MAK MAK MAK MAK MOO MOO MOO MOO MOO 
> MOO MOO MOO MOO MOO MOO MOO MOO [307] MOO MOO PHC PHC PHC PHC 
> PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC PHC [325] PHC PHC 
> PHC POS POS POS POS POS POS POS POS POS POS POS PTO PTO PTO 
> PTO [343] PTO PTO PTO PTO PTO PTO PTO PTO PTO PTO PTO RBM RBM 
> RBM RBM RBM RBM RBM [361] RBM RBM RBM RBM RBM RBM RBM RBM SKJ 
> SKJ SKJ SKJ SKJ SKJ SKJ SKJ SKJ SKJ [379] SKJ SKJ SKJ SKJ SKJ 
> STM STM STM STM STM STM STM STM STN STN STN STN STN [397] STN 
> STN STN STN STN STN STN STN STN STN STN STN STN STN STN STN 
> STN STN [415] SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO SWO 
> SWO SWO SWO SWO TOR TOR [433] TOR TOR TOR TOR TOR TOR YFN YFN 
> YFN YFN YFN YFN YFN YFN YFN YFN YFN YFN [451] YFN YFN YFN YFN
> 17 Levels: ALB ATO BIG BWS CRA MAK MOO PHC POS PTO RBM SKJ 
> STM STN SWO ...
> YFN
> 
> EXTRACT 2
> 
> > fish$Species != c("CRA","PHC")
>   [1]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  
> TRUE  TRUE TRUE  [13]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  
> TRUE  TRUE  TRUE  TRUE  TRUE TRUE  [25]  TRUE  TRUE  TRUE  
> TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE TRUE  [37]  
> TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  
> TRUE TRUE  [49]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE FALSE  
> TRUE FALSE  TRUE FALSE TRUE  [61] FALSE  TRUE FALSE  TRUE 
> FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE TRUE  [73] FALSE  
> TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
> TRUE  [85] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE 
> FALSE  TRUE FALSE TRUE  [97] FALSE  TRUE FALSE  TRUE FALSE  
> TRUE FALSE  TRUE FALSE  TRUE FALSE TRUE [109] FALSE  TRUE 
> FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE TRUE 
> [121] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  
> TRUE FALSE TRUE [133] FALSE  TRUE FALSE  TRUE FALSE  TRUE 
> FALSE  TRUE FALSE  TRUE FALSE TRUE [145] FALSE  TRUE FALSE  
> TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE TRUE [157] 
> FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE 
> FALSE TRUE [169] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  
> TRUE FALSE  TRUE FALSE TRUE [181] FALSE  TRUE FALSE  TRUE 
> FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE TRUE [193] FALSE  
> TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE 
> TRUE [205] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE 
> FALSE  TRUE FALSE TRUE [217] FALSE  TRUE FALSE  TRUE FALSE  
> TRUE FALSE  TRUE FALSE  TRUE FALSE TRUE [229] FALSE  TRUE 
> FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE TRUE 
> [241] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  
> TRUE FALSE TRUE [253] FALSE  TRUE FALSE  TRUE FALSE  TRUE 
> FALSE  TRUE FALSE  TRUE FALSE TRUE [265] FALSE  TRUE FALSE  
> TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE TRUE [277] 
> FALSE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  
> TRUE TRUE [289]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  
> TRUE  TRUE  TRUE  TRUE TRUE [301]  TRUE  TRUE  TRUE  TRUE  
> TRUE  TRUE  TRUE  TRUE  TRUE FALSE  TRUE FALSE [313]  TRUE 
> FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE 
> FALSE [325]  TRUE FALSE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  
> TRUE  TRUE  TRUE TRUE [337]  TRUE  TRUE  TRUE  TRUE  TRUE  
> TRUE  TRUE  TRUE  TRUE  TRUE  TRUE TRUE [349]  TRUE  TRUE  
> TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE TRUE 
> [361]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  
> TRUE  TRUE TRUE [373]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  
> TRUE  TRUE  TRUE  TRUE  TRUE TRUE [385]  TRUE  TRUE  TRUE  
> TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE TRUE [397]  
> TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  
> TRUE TRUE [409]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  
> TRUE  TRUE  TRUE  TRUE TRUE [421]  TRUE  TRUE  TRUE  TRUE  
> TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE TRUE [433]  TRUE  
> TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE 
> TRUE [445]  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE  TRUE
> 
> --
> View this message in context: 
> http://old.nabble.com/Weird-operator-behaviour-tp26163604p2616
> 3604.html
> Sent from the R help mailing list archive at Nabble.com.
> 
> ______________________________________________
> R-help at r-project.org mailing list
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> PLEASE do read the posting guide 
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>

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