Alex

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Alex has asked 130 questions and find answers to 9 problems.

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Alex questions

select only rows with finite values in data.frame R
unsplit list, merge factors
confusion over how duration vs. periods work in lubridate with month addition
is.null does not work on null data.table in R [possible bug]?
expression syntax for data.table := in R
scaling a subset of columns of data.table in R
How to paste two vectors together and pad at the end?
using phantomjs with RSelenium on windows 7
checking if a data.table is keyed in a function, R
inconsistent behavior in RSelenium

Alex answers

Check frequency of data.table value in other data.table
passing column names to data.table programmatically
How to compute P-value and standard error from correlation analysis of R's cor()
aggregating multiple columns in data.table
RMySQL dbWriteTable with field.types
R data.table behavior while filtering rows