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Rating Stats for

Frank

Rating
1617.40 (1,172nd)

Reputation
57,070 (1,677th)

Page: 1 ... 5 6 7 8 9 ... 28

Title	Δ
data.table: cartesian join and nomatch	0.00
Changing Data types of dataframe columns based on template with mat...	+0.25
Passing variables into data.table	-0.22
Create a table with all possible interactions (2-way and 3-way)	-2.87
Aggregate Multiple Columns with Different Formula in large data.tab...	0.00
Find previous same value in a vector and apply certain conditions	+0.90
R- How to perform a cumulative sum with unique IDs only?	0.00
Count observations that pass and fail each condition	0.00
Reduce number of elements returned by lapply	0.00
R function - choose specific argument	-0.46
Match substring of two vectors and create a new vector combining them	-0.81
How to remove duplicate values of only one column element based on...	+1.41
Optimizing subsetting with data.table in a loop	0.00
R: extract sets in arbitrary intersection from a data frame	+1.11
Using data table to find min in group for rows that fulfil row-spec...	0.00
Conditional summing across columns with dplyr	+1.52
Fast subset/lookup/filter in large datasets	+0.29
convert from sort of long format to one row expanded	+1.14
Join and overwrite data in one table with data from another table	+0.29
Fast way to find min in groups after excluding observations using R	+0.28
Filtering a data.table using two variables, an elegant fast way	0.00
count by levels on multiple columns	+0.66
Match On (of Filter By) Column Contents in List	0.00
R: Gather repeated columns	0.00
How do I fill two different columns with list values by position vi...	-1.32
Rename the Second Column in a List of Data Frames using the Name of...	+1.14
List fields in R do not match	0.00
Referencing data in leading rows	+1.15
Efficient sparse linear interpolation of row by row data	0.00
How to filter data.frame by a factor that includes NA as level	-0.19
Long table to wide table with duplicates	-0.21
Data frame to nested list	+1.95
Aggregating combination sequences	+1.29
Rbind-ing data.tables with NA values	+1.20
Remove rows from data.table that meet condition	0.00
Assigning labels to values in columns after sequential sorting in R	+0.26
dplyr/dt summarise if columns are not blank/NA and paste?	+0.32
Keep names with apply	0.00
Pass a variable to dplyr::count in a loop	0.00
Calculating summary statistics for a dataframe automatically and cr...	-0.60
Create recency variable using previous observation in data.table	0.00
Creating a new factor level based on combination of measurement val...	0.00
R: Using different DFs to get third DF with specific info from firs...	+0.30
R: transfer the pattern of data.table	0.00
How to break a string up into overlapping sets of 3	+0.30
R missing bib key in citation() output	+0.30
R data.table: (dynamic) forward looking Cross-Joins	+0.44
mapping based on nearest date	+1.04
conditional average after filtering by another dataframe	0.00
reshape multi id repeated variable readings from long to wide	+0.50