Re: [R] Ifelse statements and combining columns

[PIKAL Petr]

Hi

I may be completely wrong, but if your data was factor you could easily change 
its levels without any ifelse stuff.

Some sample data
> dat<-factor(paste("cond", sample(1:7, 20, replace=T), sep=""))
> dat
 [1] cond2 cond1 cond7 cond5 cond7 cond7 cond3 cond4 cond2 cond4 cond2 cond2
[13] cond6 cond2 cond3 cond6 cond2 cond4 cond6 cond4
Levels: cond1 cond2 cond3 cond4 cond5 cond6 cond7

Changing levels
> levels(dat)<- c(rep("uniform", 4), rep("BiasedLow",2), rep("BisaedHigh", 2))
> dat
 [1] uniformuniformBisaedHigh BiasedLow  BisaedHigh BisaedHigh
 [7] uniformuniformuniformuniformuniformuniform
[13] BiasedLow  uniformuniformBiasedLow  uniformuniform
[19] BiasedLow  uniform
Levels: uniform BiasedLow BisaedHigh

Cheers
Petr


> -Original Message-
> From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Kirsten
> Morehouse
> Sent: Monday, July 24, 2017 2:24 PM
> To: R-help 
> Subject: [R] Ifelse statements and combining columns
>
> Hi everyone,
>
> I'm having some trouble with my ifelse statements.
>
> I'm trying to put 12 conditions within 3 groups. Here is the code I have so
> far:
>
> dat$cond <- ifelse(test = dat$cond == "cond1" | dat$cond == "cond2"  |
> dat$cond == "cond3" dat$cond == "cond4"
>yes = "Uniform"
>no = ifelse(test = dat$cond == "cond5" | dat$cond ==
> "cond6") | dat$cond == "cond7" dat$cond == "cond8"
>yes = "Biased Low"
>no = "Biased High" )
>
>
> I keep getting an error statement about an invalid ). I've tried several
> permutations to fix, but without luck.
>
> Also, can anyone help me bind columns together? I've tried:
>
>  cbind[, c(15:25)] but get the error:  object of type 'closure' is not 
> subsettable
>
> Thank you in advance!
>
> Kirsten
>
>   [[alternative HTML version deleted]]
>
> __
> 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.


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Re: [R] Ifelse statements and combining columns

[Koustav Pal]

That ifelse statement is a mess, it is missing brackets, comma separators
between arguments and & or | between conditions. The bracket error points
towards the invalid bracket you had in the second ifelse since it expects
and yes and a no argument alongside conditions.

ifelse(test = (dat$cond == "cond1" | dat$cond == "cond2"  | dat$cond ==
"cond3" | dat$cond == "cond4"),yes = "Uniform" , no =
ifelse(test = (dat$cond == "cond5" | dat$cond =="cond6" | dat$cond ==
"cond7" | dat$cond == "cond8"), yes = "Biased Low" ,no = "Biased High"))

This should be what you want.


cbind is a function, therefor it is not subsettable.

if you are passing 2 arguments to cbind then cbind takes the form
cbind(c(1:n),c(1:n)) and constructs a matrix of dimension 2 x n. For
unequal vectors the shorter vector will be recycled.


On 24 July 2017 at 14:23, Kirsten Morehouse  wrote:

> Hi everyone,
>
> I'm having some trouble with my ifelse statements.
>
> I'm trying to put 12 conditions within 3 groups. Here is the code I have so
> far:
>
> dat$cond <- ifelse(test = dat$cond == "cond1" | dat$cond == "cond2"  |
> dat$cond == "cond3" dat$cond == "cond4"
>yes = "Uniform"
>no = ifelse(test = dat$cond == "cond5" | dat$cond ==
> "cond6") | dat$cond == "cond7" dat$cond == "cond8"
>yes = "Biased Low"
>no = "Biased High" )
>
>
> I keep getting an error statement about an invalid ). I've tried several
> permutations to fix, but without luck.
>
> Also, can anyone help me bind columns together? I've tried:
>
>  cbind[, c(15:25)] but get the error:  object of type 'closure' is not
> subsettable
>
> Thank you in advance!
>
> Kirsten
>
> [[alternative HTML version deleted]]
>
> __
> 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.
>

[[alternative HTML version deleted]]

__
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Re: [R] Ifelse statements and combining columns

[Duncan Murdoch]

On 24/07/2017 8:57 AM, Jeff Newmiller wrote:

Not a reproducible example, so a bit of guessing here, but

a) don't try to assign results to variables inside the ifelse. That is,  remove all the 
single-equals signs and "test" variables. If you really need to conditionally assign 
variables then use "if"... but chances are good you don't need that.


Those weren't assignments.  The arguments to ifelse() are named "test", 
"yes", and "no".


You're right though that the expressions were messed up.  Commas are 
missing between arguments, and the parentheses don't appear to be in the 
right place.


One suggestion for Kirsten:  instead of

dat$cond == "cond1" | dat$cond == "cond2"  |
dat$cond == "cond3" | dat$cond == "cond4"

it is shorter and a bit clearer to write

dat$cond %in% c("cond1", "cond2", "cond3", "cond4")

or maybe even

dat$cond %in% paste0("cond", 1:4)

Duncan Murdoch


b) "closure" is effectively another word for"function"... functions like cbind 
are called with argument lists delimited by parentheses, not brackets, and having a missing 
argument to the cbind function will be of no use.



__
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Re: [R] Ifelse statements and combining columns

[Jeff Newmiller]

Not a reproducible example, so a bit of guessing here, but

a) don't try to assign results to variables inside the ifelse. That is,  remove 
all the single-equals signs and "test" variables. If you really need to 
conditionally assign variables then use "if"... but chances are good you don't 
need that. 

b) "closure" is effectively another word for"function"... functions like cbind 
are called with argument lists delimited by parentheses, not brackets, and 
having a missing argument to the cbind function will be of no use. 
-- 
Sent from my phone. Please excuse my brevity.

On July 24, 2017 5:23:57 AM PDT, Kirsten Morehouse  
wrote:
>Hi everyone,
>
>I'm having some trouble with my ifelse statements.
>
>I'm trying to put 12 conditions within 3 groups. Here is the code I
>have so
>far:
>
>dat$cond <- ifelse(test = dat$cond == "cond1" | dat$cond == "cond2"  |
>dat$cond == "cond3" dat$cond == "cond4"
>   yes = "Uniform"
>   no = ifelse(test = dat$cond == "cond5" | dat$cond ==
>"cond6") | dat$cond == "cond7" dat$cond == "cond8"
>   yes = "Biased Low"
>   no = "Biased High" )
>
>
>I keep getting an error statement about an invalid ). I've tried
>several
>permutations to fix, but without luck.
>
>Also, can anyone help me bind columns together? I've tried:
>
> cbind[, c(15:25)] but get the error:  object of type 'closure' is not
>subsettable
>
>Thank you in advance!
>
>Kirsten
>
>   [[alternative HTML version deleted]]
>
>__
>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.

__
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] Ifelse statements and combining columns

[Rui Barradas]

Hello,

Your ifelse statement is a mess. I cannot make sense of it. Let me try 
to explain where I've lost it.


dat$cond <- ifelse(test = dat$cond == "cond1"
This is already very bad, do you mean dat$cond == "cond1" ?
Maybe you mean that condition OR the others below, but then there's one 
'|' missing, just before the last condition.


| dat$cond == "cond2"  |
   dat$cond == "cond3" dat$cond == "cond4"

After this your code should have a comma. It's missing.
Maybe you can tell us in plain english the conditions your ifelse should 
process.


Hope this helps,

Rui Barradas

Em 24-07-2017 13:23, Kirsten Morehouse escreveu:

Hi everyone,

I'm having some trouble with my ifelse statements.

I'm trying to put 12 conditions within 3 groups. Here is the code I have so
far:

dat$cond <- ifelse(test = dat$cond == "cond1" | dat$cond == "cond2"  |
dat$cond == "cond3" dat$cond == "cond4"
yes = "Uniform"
no = ifelse(test = dat$cond == "cond5" | dat$cond ==
"cond6") | dat$cond == "cond7" dat$cond == "cond8"
yes = "Biased Low"
no = "Biased High" )


I keep getting an error statement about an invalid ). I've tried several
permutations to fix, but without luck.

Also, can anyone help me bind columns together? I've tried:

  cbind[, c(15:25)] but get the error:  object of type 'closure' is not
subsettable

Thank you in advance!

Kirsten

[[alternative HTML version deleted]]

__
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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.



__
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
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