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Frank

Rating
1617.40 (1,172nd)

Reputation
57,070 (1,677th)

Page: 1 2 3 4 ... 28

Title	Δ
Filtering observations based on specific date condition using data....	+1.49
Value mapping by condition in R	-1.08
how to avoid overwriting when merging multiple datasets in r	+0.24
How to convert r data.table expression into a function for looping	0.00
Strsplit and count occurrences	+1.29
Bin data within a group using breaks from another DF	-0.68
Mutate a column in data.table with ifelse and group by	+1.43
Combine 2 columns in a new table and remove duplicates	+0.23
Can I do this with data.table without using the merge() function?	+1.44
R data.table values depending on previous row	+1.07
group by and find index of first non-zero in each group in data table	-2.16
R data.table binary value for last row in group by condition	+0.35
subsetting a data.table based on a named list	-0.91
R data.table if then sumif lookup using join	0.00
How to get mean of nonzero elements by row, varying which columns a...	-2.16
R: Up-counter with conditions	-0.86
R function to failback in a left_join?	0.00
rbindlist: NA into date-time column	+0.28
How to aggregate categorical data in R?	+1.29
Is there an R function for modifying dataframe for a nested data mo...	0.00
Change value of column based on criteria and by group	-0.02
How to check if a column value is within a range of another two for...	+0.31
Is there an R function for returning sorted indexes of any values o...	-0.77
count new values per date per group	+1.41
Find last occurrence of unique values in a column and alter value i...	-2.19
How to assign numeric value to new word within column in R	-0.21
Aggregate date time to summarize time spent at certain conditions	-2.78
Total revenue generated from a route in R	-2.72
Excel's AVERAGEIFS() in R	+0.37
Filter column and select last row using single command	+0.31
Multiply two objects in R	+0.80
Why does melt (reshape2) substitute column names by column order nu...	0.00
How to convert hourly data to 6/12/24 hourly data	0.00
data.table alternative for slow group_by() and case_when() function	+1.74
Replace values in vector based on previous and next correct value?	+1.45
Remove filter based on table with NA	+0.31
Faster equivalent to group_by %>% expand in R	-0.93
how can i group a large number of elements quickly	-0.03
Count number of days in a date range in R	-1.06
data.table and using roll over multiple columns	-0.68
create an incremental sequence for Duplicates by count	0.00
Fastest way for filling-in missing dates for data.table (cont.)	+0.30
Obtain Key Word from File Name in R	+0.24
lead or lag function to get several values, not just the nth	-0.98
Number of specific sequences in vector	-0.82
individuating rows based on conditions in nested data	0.00
Lag value with dates	-0.89
R data.table sum number of columns exceeding threshold	-1.79
how to lapply Filter	0.00
Remove Rows by Max Date	-2.37