djhurio

djhurio has asked 9 questions and find answers to 18 problems.

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About

Deputy Head of the Mathematical Support Division at the Central Statistical Bureau of Latvia. More details are available at my CV (PDF).

djhurio questions

Weighted sum of variables by groups with data.table
Converting a list to one row data.frame
Object not found error with ggplot2
Read a UTF-8 text file with BOM
Subset data.table by logical column

djhurio answers

Reading in multiple CSVs with different numbers of lines to skip at start of file
How to sort all dataframes in a list of dataframes on the same column?
How do you extract a few random rows from a data.table on the fly
How to make frequency barplot in groups?
Getting an SPSS data file into R
Example of bigmemory and friends with file backing
How can I loop through variables in SPSS? I want to avoid code duplication
Technique for finding bad data in read.csv in R
R nested foreach %dopar% in outer loop and %do% in inner loop
Automatically run R code when RStudio project is opened