[R] What is the intended behavior, when subsetting using brackets [ ], when the subset criterion has NA's?

[Ebert,Timothy Aaron]

Based on the OP's submission I pasted the following into R and tried to run it.

Here is what I think was posted (comments removed):

my_data <- 1:5
my_data
my_subset_criteria <- c( F, F, T, NA, NA) my_subset_criteria
equals TRUE my_data[my_subset_criteria == T]
my_subset_criteria == T) 

Assuming that this is the right code I tried to run it. 
The third line " my_subset_criteria <- c( F, F, T, NA, NA) my_subset_criteria" returns an error.

Error: unexpected symbol in " my_subset_criteria <- c( F, F, T, NA, NA) my_subset_criteria"

Regards,
Tim

-----Original Message-----
From: Jeff Newmiller <jdnewmil using dcn.davis.ca.us> 
Sent: Wednesday, April 6, 2022 5:22 PM
To: r-help using r-project.org; Ebert,Timothy Aaron <tebert using ufl.edu>; Kelly Thompson <kt1572757 using gmail.com>; r-help using r-project.org
Subject: Re: [R] What is the intended behavior, when subsetting using brackets [ ], when the subset criterion has NA's?

[External Email]

Mmmm, ESP on the blink.

WHAT error? from which line of code?

BTW see The R Inferno, section 8.2.32

On April 6, 2022 1:52:47 PM PDT, "Ebert,Timothy Aaron" <tebert using ufl.edu> wrote:
>I get an error with this:
>my_subset_criteria <- c( F, F, T, NA, NA) my_subset_criteria
>
>
>Tim
>
>-----Original Message-----
>From: R-help <r-help-bounces using r-project.org> On Behalf Of Kelly Thompson
>Sent: Wednesday, April 6, 2022 4:13 PM
>To: r-help using r-project.org
>Subject: [R] What is the intended behavior, when subsetting using brackets [ ], when the subset criterion has NA's?
>
>[External Email]
>
>I noticed that I get different results when subsetting using subset, compared to subsetting using  "brackets" when the subset criteria have NA's.
>
>Here's an example
>
>#START OF EXAMPLE
>my_data <- 1:5
>my_data
>
>my_subset_criteria <- c( F, F, T, NA, NA) my_subset_criteria
>
>#subsetting using subset returns the data where my_subset_criteria 
>equals TRUE my_data[my_subset_criteria == T]
>
>#subsetting using brackets returns the data where my_subset_criteria 
>equals TRUE, and also NA where my_subset_criteria is NA subset(my_data, 
>my_subset_criteria == T)
>
>#END OF EXAMPLE
>
>This behavior is also mentioned here
>https://urldefense.proofpoint.com/v2/url?u=https-3A__statisticaloddsand
>ends.wordpress.com_2018_10_07_subsetting-2Din-2Dthe-2Dpresence-2Dof-2Dn
>as_&d=DwICAg&c=sJ6xIWYx-zLMB3EPkvcnVg&r=9PEhQh2kVeAsRzsn7AkP-g&m=NoPFkG
>0n9RFRaacmiiQ9Hp1cGniz9ED5YGN11-Jh6rD_zkTTE8e5egsKqzQDMSEW&s=5lgkxT5A_M
>SfElILNk1ZM3RGpcBWpMBu713av1DH1mk&e=
>
>Q. Is this the intended behavior when subsetting with brackets?
>
>Thank you!
>
>______________________________________________
>R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see 
>https://urldefense.proofpoint.com/v2/url?u=https-3A__stat.ethz.ch_mailm
>an_listinfo_r-2Dhelp&d=DwICAg&c=sJ6xIWYx-zLMB3EPkvcnVg&r=9PEhQh2kVeAsRz
>sn7AkP-g&m=NoPFkG0n9RFRaacmiiQ9Hp1cGniz9ED5YGN11-Jh6rD_zkTTE8e5egsKqzQD
>MSEW&s=g9IzSC3WrXPLYjys_RdYSmgUoFFjsbwRJZZodqtDRa0&e=
>PLEASE do read the posting guide 
>https://urldefense.proofpoint.com/v2/url?u=http-3A__www.R-2Dproject.org
>_posting-2Dguide.html&d=DwICAg&c=sJ6xIWYx-zLMB3EPkvcnVg&r=9PEhQh2kVeAsR
>zsn7AkP-g&m=NoPFkG0n9RFRaacmiiQ9Hp1cGniz9ED5YGN11-Jh6rD_zkTTE8e5egsKqzQ
>DMSEW&s=uy6rCSNVehGynLn3ZCpLp_r2gHhoGcya4dbRe-tqQRc&e=
>and provide commented, minimal, self-contained, reproducible code.
>
>______________________________________________
>R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see 
>https://urldefense.proofpoint.com/v2/url?u=https-3A__stat.ethz.ch_mailm
>an_listinfo_r-2Dhelp&d=DwIFaQ&c=sJ6xIWYx-zLMB3EPkvcnVg&r=9PEhQh2kVeAsRz
>sn7AkP-g&m=QLbQb6DaELgtR0Qo6aQx51ea30OmGIC0oqVB_naWxmKYlQyw_N81MiAKj_5Z
>9TXC&s=G7rw7ZKvhE_HMF4z5cA5Gsr0C018E51Ov9ye3Ui2GX0&e=
>PLEASE do read the posting guide 
>https://urldefense.proofpoint.com/v2/url?u=http-3A__www.R-2Dproject.org
>_posting-2Dguide.html&d=DwIFaQ&c=sJ6xIWYx-zLMB3EPkvcnVg&r=9PEhQh2kVeAsR
>zsn7AkP-g&m=QLbQb6DaELgtR0Qo6aQx51ea30OmGIC0oqVB_naWxmKYlQyw_N81MiAKj_5
>Z9TXC&s=PKD9VZ1n0p_NfoQ2OvbmPEVr14lVwLZx09mOIWPRZmk&e=
>and provide commented, minimal, self-contained, reproducible code.

--
Sent from my phone. Please excuse my brevity.