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New posts in r
Modify a substring matched by regex and place it back [duplicate]
Dec 21, 2025
r
regex
How to update row by group in sequence
Dec 21, 2025
r
dataframe
data.table
rolling-computation
sequential
simplifying R code using dplyr (or other) to rowSums while ignoring NA, unlss all is NA
Dec 21, 2025
r
dplyr
code-cleanup
rowsum
Convert numeric vector to factor [duplicate]
Dec 20, 2025
r
How can I load dependencies in an R package?
Dec 21, 2025
r
package
cran
Combining columns, update columns based on other df, fill NAs
Dec 21, 2025
r
merge
dplyr
Subsetting a data frame based on a logical condition on a subset of rows
Dec 21, 2025
r
conditional-statements
subset
logical-operators
Rounding numbers and forcing R to display 0's
Dec 21, 2025
r
decimal
rounding
Why do I have to call dplyr :: select() multiple times, unlike filter()?
Dec 20, 2025
r
dplyr
tidyverse
replace for loop with dplyr across / rowwise?
Dec 20, 2025
r
for-loop
dplyr
rowwise
mutate
Draw an ellipse based on its foci
Dec 21, 2025
r
geometry
Use ggplot to plot polygon with holes (in a city map)
Dec 19, 2025
r
ggplot2
shapefile
unexpected behavior of replace
Dec 21, 2025
r
Create all possible combinations of non-NA values for each group ID
Dec 20, 2025
r
data.table
aggregate
na
Keep names from quantile() function when used in a data.table
Dec 20, 2025
r
data.table
tidyverse
Plot/image size in exams2nops and in exams2pdf without modifying the template
Dec 21, 2025
r
r-exams
R gtExtras gt_plt_bar_pct() fails to render
Dec 21, 2025
r
gt
gtextras
data.table handles the ordering of `.SD` and `.SDcols` with the `by` parameter
Dec 20, 2025
r
data.table
How to set the width of boxplots with custom quantiles?
Dec 21, 2025
r
ggplot2
width
scale
boxplot
Getting an actual boundary equation of LDA with two classes and two variables
Dec 21, 2025
r
statistics
equation
lda
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