longer object length and shorter object length?

[Gin10]

Hello community, I am trying to filter my data using its index, but I keep getting this error.

longer object length is not a multiple of shorter object length

I don't understand why this is happening, because I didn't do any mathematic operations. I want to exclude certain rows, but it doesn't work. Can someone help me with this?
Thanks in advance!

G$Index <- as.character(G$Index)
narr <- G %>%
  filter(Genre == "narrative", Index != c("12","21","20","16","23","11","13")) %>%
  select(Index, File.name,Word.count.tier.1, Length.of.recording) %>%
  arrange(desc( factor(Word.count.tier.1)))

[nirgrahamuk]

Hi!

To help us help you, could you please prepare a reproducible example (reprex) illustrating your issue? Please have a look at this guide, to see how to create one:

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.…

[jmcvw]

Agree with Nir, a reprex will help but the following is worth a look.
To compare a vector use !var %in% vec instead of !=

@Gin10

Index != c("12","21","20","16","23","11","13")

[Gin10]

Thank you Nir! Here is my reprex example: (I hope it works.)

df <- data.frame(
  stringsAsFactors = FALSE,
             Index = c(27L, 22L, 17L, 25L, 12L, 3L),
          Filename = c("f99Ogoelong","f99Dliit",
                       "f99Akur","f99Dreep","f00Jfuan","c00ANyouth3"),
             Genre = c("Traditional narrative (with singing)","Traditional narrative","Traditional narrative",
                       "Traditional narrative","Traditional narrative",
                       "Conversation"),
          duration = c("0:11:24","0:08:57","0:05:26",
                       "0:07:23","0:10:04","0:06:29"),
         Wordcount = c(1840L, 1413L, 1302L, 1226L, 1156L, 1153L)
)

narr <- df %>%
    filter(Genre == "Traditional narrative") %>%
    filter(Index != c(12, 21, 20,16,23,11,13)) %>%
    arrange(desc( factor(Wordcount)))

Still, I got the same error:

longer object length is not a multiple of shorter object length

[Gin10]

Hi!
Thank you for your suggestion!

I tried !%in% as here in the example:

library(dplyr)
df <- data.frame(
  stringsAsFactors = FALSE,
             Index = c(27L, 22L, 17L, 25L, 12L, 3L),
          Filename = c("f99Ogoelong","f99Dliit",
                       "f99Akur","f99Dreep","f00Jfuan","c00ANyouth3"),
             Genre = c("Traditional narrative (with singing)","Traditional narrative","Traditional narrative",
                       "Traditional narrative","Traditional narrative",
                       "Conversation"),
          duration = c("0:11:24","0:08:57","0:05:26",
                       "0:07:23","0:10:04","0:06:29"),
         Wordcount = c(1840L, 1413L, 1302L, 1226L, 1156L, 1153L)
)

G$Index <- as.character(G$Index)
narr <- G %>%
  filter(Genre == "Traditional narrative") %>%
  filter(Index !%in% c("12","21","20","16","23","11","13")) %>%
  arrange(desc( factor(Wordcount)))

It failed either, the error is

Error: unexpected '!' in:
"  filter(Genre == "Traditional narrative") %>%
  filter(Index !"

Is that due to the library?

[jmcvw]

Nope. It's because !var %in% vec in not the same as Index !%in% c(12...

Note carefully the position of the !

I just tried it on your reprex - works fine.

[Gin10]

Thank you! The problem has been solved.

But I still don't understand why it didn't work with != or !%in%, though I tried to convert the index into numeric and character forms (maybe the form has nothing to do with the error?)

[jmcvw]

1. Because !%in%, insn't a thing
   • try just 2 %in% 1:3 then ! 2 %in% 1:3 and read ?%in%`
2. This is what the error message longer object length is not a multiple of shorter object length was trying to say in R speak
   • What would you expect the answer to 1 == 1,2,3 to be?
   • 1 is clearly not equal to 1,2,3, because they are different lengths

[Gin10]

Oh sorry for my mistake and stupid question.
Thanks a lot for the explanation. I got it now.