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

[Jeff Newmiller]

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__statisticaloddsandends.wordpress.com_2018_10_07_subsetting-2Din-2Dthe-2Dpresence-2Dof-2Dnas_&d=DwICAg&c=sJ6xIWYx-zLMB3EPkvcnVg&r=9PEhQh2kVeAsRzsn7AkP-g&m=NoPFkG0n9RFRaacmiiQ9Hp1cGniz9ED5YGN11-Jh6rD_zkTTE8e5egsKqzQDMSEW&s=5lgkxT5A_MSfElILNk1ZM3RGpcBWpMBu713av1DH1mk&e=
>
>Q. Is this the intended behavior when subsetting with brackets?
>
>Thank you!
>
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>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=9PEhQh2kVeAsRzsn7AkP-g&m=NoPFkG0n9RFRaacmiiQ9Hp1cGniz9ED5YGN11-Jh6rD_zkTTE8e5egsKqzQDMSEW&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
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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.

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