tibble could refer to an R class (tbl_df class), which is an improved data frame with stricter checking and better formatting. tibble could also refer to an R package providing functions to create and manipulate a tibble.
Questions tagged [tibble]
1309 questions
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1 answer
dplyr/r make class spec_tbl_df
I'm trying to run a line of code that reads over 55 columns. 20 of them have distances of the location from other cities. This code looks for the shortest distance and populates a new column with the name of the city that has the shortest distance…
J.Sabree
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2 answers
Create a dataframe with repeated values
I would like to create a tibble which looks like this:
# A tibble: 3 x 4
team arsenal chelsea spurs
1 arsenal self london north-london
2 chelsea london self london …
aaaakkkkk
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R tibble: aggregating by row across specific columns, by column groups
I have data of biological compounds levels of test patients, who are grouped into different groups depending on being administered certain drugs. That is, we have:
Columns: Drugs(or groups) A, B and C, where each group has 3 patients (individually…
AndreyIto
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apply function across rows for specific columns
I have tibble like:
t <- tribble(~name, ~salary, ~weight,
"sarah", 90000, 110,
"john", 50000, 150,
"jones", 70000, 160,
)
I wish to divide salary by 1000, and weight (here in pounds) by 2.2,…
AndreyIto
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- 35
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2 answers
Changing a character into a date format after checking the entry of another column/row
I have a data set with three fields. I would like to replace any row that has 'Annual' in it to an appropriate date.
data:
df <- structure(list(`Grants Period Month` = c("Annual", "01-2014-12",
"Annual", "Annual", "01-2013-06", "Annual"), `Due…
jb12n
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Why function needs tibble as an argument even if it is not used inside function?
This code works as intended:
my_tbl<-tibble(var1=c("a","a","a"), var2=c("b","b","b"))
string_to_match_list<-list("b")
my_row<-my_tbl[2,]
my_tbl$var2[2]<-match_every_cell_start_and_modify_with_binary(my_tbl, my_row,…
vasili111
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How to bar plot answers per category in ggplot?
I have a tibble created like this:
tibble(district = c(1, 5, 3, 5, 2, 7, 8, 1, 1, 2, 2, 4, 5, 6, 8, 6, 3),
housing = c(1, 1, 2, 1, 2, 2, 2, 1, 1, 2, 3, 2, 1, 1, 1, 3, 2))
Now I would like to know how the type of housing is distributed per…
JNab
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How to rearrange a tibble by rownames
Traditional dataframes support rearrangement of rows by rownames:
> df <- data.frame(c1 = letters[1:3], c2 = 1:3, row.names = paste0("x", 1:3))
> df
c1 c2
x1 a 1
x2 b 2
x3 c 3
#' If we want, say, row "x3" and "x1":
> df[c("x3", "x1"), ]
…
foehn
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2 answers
Pass multiple variables of a tibble to a function using mutate produces NA's?
Please advise, I have the following simple function:
mifflin_equation <- function(gender = "M",
w_kg = 50,
h_cm = 180,
age = 40,
…
SteveS
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2 answers
Get top x% or top n results from a nested tibble
I am tyring to take the top x results from a group of nested data. Adding map(data, slice(seq(n()*0.2))) to the end of the pipe function gives me errors.
So I am trying to get the top 20% of each tbl_df and return them.
Secondly How can I nest the…
user8959427
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R mutate a nested tibble
I would like to join a 2 dimensional tibble to another one as follows:
library(tidyverse)
set.seed(1)
tib1 <- tibble(locid = seq(2))
tib2 <- tibble(x=runif(1), y = x * 2)
I've tried the following:
tib3 <- tib1 %>%
mutate(z = list(tib2)) %>%
…
Vincent Risington
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Go back to .name_repair result before update to read_xlsx?
I am using the read_xlsx() function in the readxl package, though I think this applies to more functions. I believe an update to the package has made changes to the default for the .name_repair option in the function, and I'm wondering if I can do…
Alexander Agadjanian
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How to multiply two tibbles with different dimensions in R?
When I multiply a vector by a matrix I do:
mat <- matrix(c(c(2,3),c(4,5)),2)
vec <- c(1,-1)
vec * mat
I get
[,1] [,2]
[1,] 2 4
[2,] -3 -5
But when I try to do something similar with tibbles, like
library(dplyr)
a <- tibble(x =…
sbac
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How to access a list of tibble to check whether "UTF-8" and run import R
TARGET :
Check whether a list of files have same encoding before import and rbind ,if not the same STOP run
# files list & check encoding
FL_PATH <- list.files(path,pattern = "*.csv",full.name = T)
library(readr)
lapply(FL_PATH,guess_encoding)
# if…
rane
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Aggregate a tibble based on a consecutive values in a boolean column
I've got a fairly straight-forward problem, but I'm struggling to find a solution that doesn't require a wall of code and complicated loops.
I've got a summary table, df, for an hourly timeseries dataset where each observations belongs to a group.
I…
djfinnoy
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