Simon O'Hanlon

Simon O'Hanlon has asked 54 questions and find answers to 329 problems.

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I like python, r and zsh. My first computer

Simon O'Hanlon questions

Can data.table handle identical column names when using .SDcols?
Logical operators - short (relational) vs long (vector) forms
Speed of vectorized operation dependent of number of columns of data.frame
Clip lines to plot area and display text outside plot area
Why does tempdir() adds extra slash at end of directory tree on osx?
Changing Git protocol for RStudio project already under version control in Windows
data.table::fread doesn't like missing values in first column
combn unclasses factor variables
How do I reference a column in lapply which is not part of the SD?
Is paste a special argument in plotmath expressions?

Simon O'Hanlon answers

ifelse statement with many categories
Which numbers are present in a vector but not in another one [duplicate]
Replicate each row of data.frame and specify the number of replications for each row?
R grepl to find a pure number
Fastest way to add an element to a vector if it doesn't already exist in R
Round a POSIX date and time (posixct) to a date relative to a timezone
How to find all functions with methods for a given class
Choropleth map with R using shp file
Spatial Autocorrelation Analysis (Global Moran's I) in R
sendmailR - Attached more than one recipient