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How-to guide

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

created Aug 28, 2023 at 18:58

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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 ...

Berthold♦

answered Aug 2, 2023 at 17:39

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R "rphylopic" package fails with ggplot - my issue or package issue?

I'm using the rphylopic package to add images of animals to a figure I'm making with ggplot2. The code worked great a couple weeks ago but now I'm having trouble re-loading it. When I try to make my ...

Peter Thompson

asked 17 hours ago

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45 views

Oblique Mercator projection +alpha bug when aligning terra raster to (coastline) segment azimuth

I'm attempting to align a square projected raster grid to individual segments of an n = 15 sided polygon using the terra package and an Oblique Mercator (omerc) projection. The goal is for the ...

00J

asked 21 hours ago

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Connect to EViews data base in R

I have an Eviews data base which is stored in an .edb file (along with an .e0, .e1a, and and .e1b file). Is there any way I can read from (and optimally also write to) this DB with R? I am aware of ...

dameili

asked 22 hours ago

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How to fix converting the numeric value on y-axis

I am plotting the data with emp on the x-axis, test_ind on the y-axis, and applying coord_flip(). The test_ind values go from 0-1 but the plot ends up showing 0-6 on the y-axis. mydata<-structure(...

L Tyrone

8,028

modified Oct 10 at 23:45

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Prevent resetting graph when slider plotly barplot R

I would like to prevent plotly rerender the graph when we change the x-axis range by dates and when you deselect bars from the legend it should remain the same bars when it changed the x-axis. For ...

Quinten

42.7k

asked Oct 10 at 13:28

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Horizontal segments in violin plot in R [duplicate]

I am looking for a way to implement horizontal segments inside a violin-plot in R. I attach an image displaying how I need the plot to look like. I tried using ggplot2, which I am fairly experienced ...

M--

33.3k

modified 3 hours ago

Answer

You can use stage() to filter the violin after it has been computed. The idea is to use different filtered layers as your segments. The warning in the code below is benign: it is because the stage() ...

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teunbrand

38.9k

answered 8 hours ago

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How can I have a powerpoint document created using OfficeR be downloadable by users of my app?

This is my first question since I cannot find any resources on using these two libraries together. I use this for a user to decide to download the slides: downloadButton("download.slides", &...

r2evans

166k

answered Oct 10 at 11:42

Answer Accepted

From ?shiny::downloadHandler, content: A function that takes a single argument ‘file’ that is a file path (string) of a nonexistent temp file, and writes the content to that file ...

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r2evans

166k

answered Oct 10 at 11:42

4 votes

3 answers

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Can't convert back slashes to forward slashes [duplicate]

Im studying about data but there is a problem. There is a lot of data that I use to study but everytime I want to load the data with read_csv() I use a lot of time to change \ to /. My files are ...

r2evans

166k

modified Oct 10 at 20:40

Answer Accepted

Use forward-slashes instead. On macos and linux, R uses forward-slashes only for directory separators. On windows, however, it accepts either, so all of the following will work on windows: path <- &...

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r2evans

166k

answered Oct 10 at 12:01

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R package loading error - .onAttach failed in attachNamespace()

SEE FINAL EDIT FOR SOLUTION I am trying to use the marginaleffects package in R, but when I call: library(marginaleffects) I get the error: Error: package or namespace load failed for ‘...

r2evans

166k

modified Oct 10 at 15:24

Answer

I think you have fixed one of your issues, and that is that you had to restart into an empty R session in order to install it. This suggests you had a .Rproj or .RData file in your current working ...

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r2evans

166k

answered Oct 9 at 20:05

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1 answer

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Keep sorting order within faceted plot when some elements appear multiple times

I am trying to make a ggplot() using geom_bars() which are wrapped by ranking. I have multiple rankings, and on each place, more than one group can have the same ranking. Here is my MWE: data <- ...

L Tyrone

8,028

modified Oct 8 at 19:57

Answer

ggplot orders the bars the same way across all facets. This is a bit hard to see, since you remove most categories with the free y-axis. Running your code without that makes it easier to see: What ...

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Axeman

35.7k

answered Oct 8 at 18:12

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2464 votes

23 answers

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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 ...

jay.sf

76.1k

modified Apr 2 at 9:39

1512 votes

21 answers

1.4m views

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(...

Melanie Shebel

2,960

modified Jul 16, 2024 at 4:37

991 votes

30 answers

2.2m views

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?

Antreas Stefopoulos

answered Feb 17 at 14:12

1052 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 ...

Quinten

42.7k

answered Aug 26, 2022 at 17:16

1571 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&...

Melanie Shebel

2,960

modified Feb 3 at 8:58

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How-to guide

How to write a good R question with a reproducible example

anon

created Aug 28, 2023 at 18:58

20 votes

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3 minute read

How-to guide

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 ...

Guibor Camargo Salamanca

created Apr 18, 2023 at 17:48

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