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View all 3 collectionsR Language admins have deemed these posts noteworthy.
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R Language Frequently Asked Questions
The questions that get asked repeatedly, gathered together in one place. What’s a question every R programmer asks at some point? Add it here! Grab questions from the r-faq tag to get them added ...
- 101
Pinned
49
votes
4k
views
2 minute read
How to write a good R question with a reproducible example
This article is largely written based on https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example
When posting a question to Stack Overflow, you should include a minimal ...
anon
Can you answer these questions?
View all unanswered questionsThese questions still don't have an answer
0
votes
0
answers
18
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Making data.frames of different lengths the same length based on same values in one column across data.frames (or: how to manage subsetting)
I am working with 14 data.frames, each is a year's worth of crime data from NIBRS. The files are titled NIBRS2010, NIBRS2011 . . . NIBRS2023. Each of them has a different number of observations, but ...
1
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0
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Control the size of the output plot in R notebook in Positron
I want to control the size of the output plot in Positron in R ipynb notebooks.
In RStudio in markdown, I would start the chunk with {r fig.width=9,fig.height=5} and I could resize the plot to fit my ...
- 11
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0
answers
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R expressions for branch labels in `rpart` object
Given an rpart object representing a classification tree, I want to represent each split in the tree as an expression in R syntax.
This is almost possible using the labels generated by plotting or ...
- 19.9k
1
vote
0
answers
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Run reticulate::py_require() once on package installation
We have an internal python library that we want to build an R wrapper for. The python package only needs to be installed once and not every time. The documentation says to use py_require() over ...
- 3,296
1
vote
0
answers
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shinybusy does not work in bslib::page_navbar
I would like to use the shinybusy package to display a custom GIF as busy indicator at start up. While it works well in a fluidPage, using bslib::page_navbar throws an error :
Here the code I used, ...
- 23
Recommended answers
View all recommended answersThese answers have been recommended
3
votes
1
answer
53
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How to format numbers with commas using table1
How can I format table1 columns with comma format? The sample data below has fewer rows and it does not display big values that require commas because I can't post my huge dataset. I wonder if someone ...
- 30k
Answer
Accepted
library(table1) set.seed(42) dat <- data.frame( Group = factor(rep(c("Treatment", "Control"), each = 50000)), Count = round(rnorm(100000, 50, 15)), Category = ...
View answer
- 30k
1
vote
1
answer
67
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How to correctly read German special characters from CSV file in R on Linux?
I am trying to load a German CSV file into R on Fedora Linux 42, but the region names containing special characters (like u-umlaut, o-umlaut, eszett) are not rendered correctly.
Here's a simplified ...
- 208k
Answer
Accepted
Looking at the file, it is incorrectly encoded. It does satisfy the requirements for looking like a UTF-8 file, but it doesn't encode the characters you are expecting. For example, in Nürnberg, the &...
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- 208k
1
vote
2
answers
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Persist R function defined in Rprofile even if user clears environment
I have an rprofile that is used for multiple users spinning up sessions in a shared jupyterhub. In it I define a function that sets some parameters for closing out idle sessions (basically it ...
- 164k
Answer
Accepted
Edit: changed from using rlang::env_unlock() (which is deprecated) to something more local. Somes notes about this: I'm using dot-names, mostly because it is one-step more to "find" them ...
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- 164k
1
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2
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Creating (ggplot2-)boxplots based on integer x values with correct spacing on the x axis
I am trying to visualize my benchmarking results where for three values of the discrete hyperparameter p and two values of categorical hyperparameter q, I have 50 runtimes. I am trying to create a ...
- 128k
Answer
Accepted
A pure {ggplot2} option would be to convert your p column to integers and to explicitly set the group aes to group by both p and q: library(ggplot2) set.seed(123) min_ex <- data.frame( p = ...
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- 128k
0
votes
4
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Plotting actual words as the bars in R
I have a list of text:
1996 Steven Harper - Immunopathogenesis of IgA nephropathy
1997 Nigel Brunskill - Pathogenic implications of proteinuria
1998 Albert Ong - Polycystic kidney disease
1999 ...
- 4,576
Answer
Yet another ggplot option, if you want your labels to sit inside actual bars: library(tidyverse) df %>% mutate(nchar = nchar(Title)) %>% ggplot(aes(Year, 0)) + geom_label(aes(label = ...
See what's trending
View all trending questionsThese are the most active questions in R Language Collective
2464
votes
23
answers
484k
views
How to make a great R reproducible example
When discussing performance with colleagues, teaching, sending a bug report or searching for guidance on mailing lists and here on Stack Overflow, a reproducible example is often asked and always ...
- 75.9k
1511
votes
21
answers
1.4m
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Sort (order) data frame rows by multiple columns
I want to sort a data frame by multiple columns. For example, with the data frame below I would like to sort by column 'z' (descending) then by column 'b' (ascending):
dd <- data.frame(b = factor(c(...
- 2,958
989
votes
30
answers
2.2m
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How do I replace NA values with zeros in an R dataframe?
I have a data frame and some columns have NA values.
How do I replace these NA values with zeroes?
1050
votes
25
answers
2.0m
views
Drop data frame columns by name
I have a number of columns that I would like to remove from a data frame. I know that we can delete them individually using something like:
df$x <- NULL
But I was hoping to do this with fewer ...
- 42.2k
1570
votes
14
answers
1.9m
views
How to join (merge) data frames (inner, outer, left, right)
Given two data frames:
df1 = data.frame(CustomerId = c(1:6), Product = c(rep("Toaster", 3), rep("Radio", 3)))
df2 = data.frame(CustomerId = c(2, 4, 6), State = c(rep("Alabama&...
- 2,958
Learn something new
These are the most recent articles in R Language Collective
49
votes
4k
views
2 minute read
How to write a good R question with a reproducible example
This article is largely written based on https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example
When posting a question to Stack Overflow, you should include a minimal ...
anon
20
votes
3k
views
3 minute read
Create multiple PDF/HTML reports using R Markdown in a loop
How to create multiple PDF/HTML reports in a loop using R Markdown
With R Markdown, creating a PDF or HTML report is straightforward. But what if you want to create various reports? Furthermore, what ...
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