Josh O'Brien

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Josh O'Brien has asked 30 questions and find answers to 1234 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

How do I create a table of value-frequency combinations arranged vertically in R
R: Primitive Function - For Historical or Efficiency Reasons?
How can I find the pixel-wise maximum of multiple rasters?
Using R to calculate total events per day from a data frame that contains all events and their timestamps
Plotting to a file from a function in R
using legend() in Sweave: is this a bug?
Converting a List of Variables into a data.table object
How do I combine lists of identical lengths into one?
Replacing row-values in matrix by its row index
How to change title text color in Leaflet for R?