Matt Dowle

Matt Dowle has asked 18 questions and find answers to 356 problems.

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Project homepage | Datacamp data.table online course

Matt Dowle questions

How to hide TclTk window in R while it is being drawn
Is there a way for R to run a script and on error return non-0 to the shell?
Strange difference between x and get("x")?
Can R create a barplot image with clickable bars to insert on a webpage?
How to run a package's testthat tests
Is there a way to run an expression on.exit() but only if completes normally, not on error?
Is there a way to `source()` and continue after an error?
There is pmin and pmax each taking na.rm, why no psum?
Is this the fastest way to group in Pandas?
Why has data.table defined := rather than overloading <-?

Matt Dowle answers

In R, How Do I Create a data.frame with Unique Values from One Column of another data.frame?
unable to install R's data.table on R version 3.5 - windows 10 [duplicate]
Invoke R on a server to extract data, from within R session on host?
Joining two partial data tables, keeping all x and all y
passing name of dataframe into a loop in r
transpose-like procedure in data.table
Equivalent to sql cartesian query with data.table
Accessing a data.table via column numbers and grep
Create new column in data.table by group
fill gaps in a timeseries with averages