Josh O'Brien

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Josh O'Brien has asked 30 questions and find answers to 1282 problems.

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Josh O'Brien questions

Which JavaScript code implements shiny's numericInput widget?
Making knitr code blocks more cleanly cut-and-pastable
Any pitfalls to using programmatically constructed formulas?
How to perform a vector overlay of two SpatialPolygonsDataFrame objects?
How to add names to a numpy array without changing its dimension?
Why does trace(..., edit=TRUE) not work when ... = [.data.table
How to locate code called by .External2()?
Any way to access function installed by makeActiveBinding?
How to set knitr chunk output width on a per chunk basis?
Can .SD be viewed from a browser within [.data.table()?

Josh O'Brien answers

Find numeric and character columns that are perfectly correlated / redundant
set key text inside key rectangle in lattice plots
plot in red, green or blue levels
Writing raw stored as character to a file
Make sure all default packages are loaded before running .Rprofile
Matrix scale-out
does white space slow down processing
data.table := does not support logical data types when adding new column?
Getting an integer atomic vector (vs. numeric)
What arguments were passed to the functions in the traceback?