[R] functions from 'base' package are not accessible

[William Dunlap]

Or perhaps two exclamation points would be better ('unquote' in the
tidyverse lexicon, 3 bangs is 'unquote-splice').

Bill Dunlap
TIBCO Software
wdunlap tibco.com

On Thu, Aug 24, 2017 at 10:20 AM, William Dunlap <wdunlap at tibco.com> wrote:

> Try putting !!! (three exclamation symbols) in front of which(...)==....
>
> The non-standard evaluation in the tidyverse can cause confusion.
>
> Bill Dunlap
> TIBCO Software
> wdunlap tibco.com
>
> On Thu, Aug 24, 2017 at 4:32 AM, Eugeny Melamud <
> Eugeny.Melamud at lanit-tercom.com> wrote:
>
>> Hi all!
>>
>> The following code (executed in console)...
>>     somevar <- data.frame(v1 = 1:5, somestring = 6:10, v3 = 11:15, v4 =
>> 16:20);
>>     somevar %>% gather(key = var, value = val, which(names(somevar) ==
>> "somestring"):length(somevar)) %>% head(2);
>> throws...
>>     Error in which(names(somevar) == "somestring") :
>>       could not find function "which"
>>
>> if I change which(names(somevar) == "somestring") with 0 I'll get
>>    Error in length(somevar) :
>>       could not find function "length"
>>
>> So it looks like base package is not loaded. Still if type 'which' in
>> console I get
>>   function (x, arr.ind = FALSE, useNames = TRUE)
>>   {
>>     wh <- .Internal(which(x))
>>     if (arr.ind && !is.null(d <- dim(x)))
>>         arrayInd(wh, d, dimnames(x), useNames = useNames)
>>     else wh
>>   }
>>   <bytecode: 0x0000000006c6e258>
>>   <environment: namespace:base>
>>
>> base (that contains which function) package is installed. R version is
>> 3.4.1 and system is Win8
>>
>> Where should I look to understand how to fix the problem?
>>
>> Thank you in advance!
>> Eugeny
>>
>>
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>>
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>
>

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