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New posts in r
Adding the values of second column based on date and time of first column
Jan 31, 2026
r
addition
Create new columns based on rows
Feb 01, 2026
r
Calculate time difference (difftime) between columns of different rows
Jan 31, 2026
r
datetime
posixct
difftime
dplyr semi_join Error: `x` and `y` must share the same src, set `copy` = TRUE (may be slow)
Jan 31, 2026
r
dplyr
semi-join
Error in eval(expr, envir, enclos) : object * not found when wrapping qplot()
Jan 31, 2026
r
function
scoping
Show an R markdown chunk in the final output
Feb 01, 2026
r
markdown
knitr
slidify
Warning: Error in cat: argument 1 (type 'list') cannot be handled by 'cat' [No stack trace available] in R shiny webtool
Feb 01, 2026
r
shiny
shinydashboard
shiny-server
shiny-reactivity
How can I pass a sparse matix from Perl to R?
Feb 01, 2026
perl
r
sparse-matrix
Error attaching rstan package: Entry Point Not Found
Jan 30, 2026
r
rcpp
failed-installation
rstan
What does "survivalsvm" predict?
Feb 01, 2026
r
machine-learning
svm
survival-analysis
Set the background color for quantmod::chart_Series
Jan 31, 2026
r
quantmod
'data' must be 2-dimensional (e.g. data frame or matrix) RShiny
Jan 31, 2026
r
shinydashboard
shiny-server
How to multiply a scalar value across multiple columns in R data.frame?
Jan 31, 2026
r
dataframe
tidyverse
multiplication
scalar
Counting sequential dates in R to determine the length of an event
Jan 31, 2026
r
date
sequence
Reproducing PROC NLIN output with nls
Jan 31, 2026
r
sas
nls
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