IRTFM

IRTFM has asked 15 questions and find answers to 1346 problems.

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IRTFMMT == "I read the fine manual, many times" Retired physician. Longtime R user.

IRTFM questions

Why read.zoo gives index as dates when times are available
How to wrap RHS terms of a formula with a function
How to capture minus sign in scientific notation with regex?
Setting NA in a matrix using another logical matrix
Convert console output of list to a real R list
How to represent polynomials with numeric vectors in R
Why doesn't outer work the way I think it should (in R)?
Why is the terminology of labels and levels in factors so weird?

IRTFM answers

Accessing a data.table via column numbers and grep
Using optional arguments (...) in a function, as illustrated with new population pyramid plot
Order confusion matrix in R
Date time values are displayed broken in DT:datatable()
Extract source metadata from downloaded file
Proc GLM (SAS) using R
How to convert sqlite dates to a date in R
How to compare if two data frames have identical column names and classes?
Is it possible to use something like `tz=NULL`?... `as.POSIXct` defaults to locale-dependent timezone (unlike `as.Date`), which causes issues
Selecting from xts by column name