Josh O'Brien

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Josh O'Brien has asked 30 questions and find answers to 1269 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

R: Abbreviate state names in strings
Using jpeg(file= ) creates an empty jpeg even though there's not a call to create a plot
Calculating centiles along with minimum and maximum values in R
Implement table() function as a user defined function
Is it possible to make Graphics plot portable like ggplot?
Controlling the alpha value of plot symbols in a lattice densityplot
Determine if all values are adjacent integers in R
R: Plotting matrix columns using formulas
Set single raster to NA where values of raster stack are NA
graphical theme settings: a nested list structure with easy access to all levels?