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Rating Stats for

Frank

Rating
1617.40 (1,172nd)

Reputation
57,070 (1,677th)

Page: 1 ... 18 19 20 21 22 ... 28

Title	Δ
R data.table set new column with logical value if a weekday is betw...	+1.69
R sequence automation	-0.97
Selection of levels of factors within a factor	+2.69
Join two data frames in R based on closest timestamp	-1.41
Filter rows where "grouping keys" change at least 1 time...	-0.03
Assign an element value based on element adjacencies in R	+0.47
R: list of vectors - grouping identical vectors together	0.00
Create index from group to select value from original data.frame to...	-1.86
Substitute previous row value if value equal to 0 in R	+1.34
Substitute previous row value if value equal to 0 in R	-0.44
Count all values in a column based on string in another column in R...	0.00
Sum Every N Values in Matrix	-1.09
How to predict the next variable in a row based on current patterns?	+0.52
Alternative to if-then-else with logical variables in R	+2.00
Alternative to if-then-else with logical variables in R	-2.00
aggregate means and keep N	+0.46
Access previous elements in lapply/sapply	+1.71
Replicate values of column along rows	0.00
in R: Setting new Values in a data.table fast	+0.43
Calculate the difference between consecutive, grouped columns in a...	0.00
Creating every possible team combination -- combinatorial optimizat...	0.00
How to identify the longest range of consecutive years in a list to...	-0.80
R: Uniques (or dplyr distinct) + most recent date	0.00
Non-uniform `shift`ing: leads/lags with multiple within-period&...	0.00
Group ID in R data.table, each element of the new table is a vector	+0.95
dplyr - select first and last row from grouped data	+0.48
Using ddply across numerous variables when calculating descriptive...	0.00
sample() command is too slow in R	0.00
Remove rows with NA in a group, given the group contains at-least o...	-0.08
How to normalize multiple-values-column in a data table in R	+0.42
combine each two consecutive columns into one column in r	0.00
cbind specific columns from multiple data.tables efficiently	+0.08
Creating a table of species traits weighted by abundance in R	+0.43
Conditional keyed join/update _and_ update a flag column for matches	+0.43
Set comparison in R	+0.45
How to perform further grouping and lookups on aggregated values in...	0.00
How to cast multiple columns and values of a data.table?	+0.49
add constant column to nested data.table	0.00
Integers/epressions as names for elements in lists	-2.17
Create a new column in dataframe by indexing into a list using anot...	+0.13
Strange error when expanding data.table	0.00
How to dcast a data.table with missing values before given date	0.00
R lapply different function to each element of list	-1.49
Extracting values dynamically from a dataframe in R	0.00
trying to subset a data table in R by removing items that are in a...	+0.23
R: pass args to outer()	+1.90
Map values into groups for differents variables	-0.02
correlation matrix of a bunch of categorical variables in R	-0.04
Find the largest element in a vector less than values in another ve...	+0.47
R: reshaping dataframe into matrix of 1's and 0's	-0.14