matt_k

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matt_k has asked 13 questions and find answers to 6 problems.

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matt_k questions

How to apply function by column to a list of matrices
Summing two dataframes based on common value
Pandas count the number of times an event has occurred in last n days by group
Conditionally evaluate heading using knitr in .Rmd file
How to define holidays for is.holiday() chron package in R
Using sample() with sample space size = 1
Logic of installation location of R packages under Linux
Filter data frame rows based on values in vector
Add user to group but not reflected when run "id"
calling conda source activate from bash script

matt_k answers

Calculating a group mean while excluding each cases individual value
How to produce a meaningful draftsman/correlation plot for discrete values
"Factor has new levels" error for variable I'm not using
Easier way to run a program in r. Two for's 47,022,066 operations