[R] "invalid argument to unary operator" while selecting rows by name

[ruipbarradas at sapo.pt]

Sorry, I've made a stupid mistake.
It's obviously the other way around.

ix <- which(rownames(data) %in% c("601", "604"))
clean <- data[-ix, ]


Rui Barradas


Citando ruipbarradas at sapo.pt:

> Hello,
>
> Try something like the following.
>
> ix <- which(c("601", "604") %in% rownames(data))
> clean <- data[-ix, ]
>
>
> Hope this helps,
>
> Rui Barradas
>
>
>
>
> Citando Pauline Laïlle <pauline.laille at gmail.com>:
>
>> Dear all,
>>
>> I built a dataframe with read.csv2(). Initially, row names are integers
>> (order of answers to a survey). They are listed in the csv's first column.
>> The import works well and my dataframe looks like I wanted it to look.
>>
>> Row names go as follows :
>> [1] "6"   "29"  "31"  "32"  "52"  "55"  "63"  "71"  "72"  "80"  "88"  "89"
>> "91"  "93"  "105" "110" "111" "117" "119" "120"
>> [21] "122" "127" "128" "133" "137" "140" "163" "165" "167" "169" "177"
>> "178" "179" "184" "186" "192" "193" "200" "201" "228"
>> etc.
>>
>> I would like to drop rows "601" & "604" to clean the dataframe.
>>
>> While data["601",] shows me the first row i'd like to drop, data[-"601",]
>> returns the following :
>> Error in -"601" : invalid argument to unary operator
>>
>> idem with data[c("601","604"),] and data[-c("601","604"),]
>>
>> It is the first time that I run into this specific error. After reading a
>> bit about it I still don't understand what it means and how to fix it.
>>
>> Thanks for reading!
>> Best,
>> Pauline.
>>
>> 	[[alternative HTML version deleted]]
>>
>> ______________________________________________
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>> and provide commented, minimal, self-contained, reproducible code.
>
> ______________________________________________
> R-help at 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.