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Rating Stats for

Arun

Rating
1646.88 (617th)

Reputation
97,405 (767th)

Page: 1 2 3 4 5 6 ... 26

Title	Δ
data.table residual variance for multiple factors and keys	0.00
Fastest method to replace data values conditionally in data.table (...	0.00
Moving averages with multiple GroupBy	+1.44
How to read tab separated file into data.table using fread?	+0.03
Undo reshape to original data.table format	+0.32
How to read file with irregular space separated value using fread()?	0.00
Merge 2 dataframes by matching dates	-0.04
How to speed up subset by groups	+1.91
Join two data frames in R based on closest timestamp	+1.41
Replacing the last value within groups with different values	-0.98
Reshaping a data.frame so a column containing multiple features bec...	-0.61
Merge column within same data frame	-0.66
A quick way to screen a data frame contents over multiple weeks	0.00
Replace cells with a matching ID in R dataframe	-1.89
Replace values from one list of columns from another list of column...	0.00
Removing duplicates based on two columns in R	+1.44
Subsetting Across Data Frames Using dplyr in R	+0.88
reshape and aggregate datatable	+1.40
Reshape and mean calculation	-0.45
Aggregating one factor based on another in data.table in R	+2.24
reshape R dataframe scraped from internet with	+0.66
Adding in blank rows in R dataframe	+0.67
Data.table - left outer join on multiple tables	+0.28
Generating recursive ID by muli-variate group using data.table in R	-0.06
data.table::fread's stringsAsFactors=TRUE argument doesn't...	+0.59
trying to use fread() on .csv file but getting internal error "...	-0.67
In R: dcast in function, pass column names (again!)	0.00
data.table row-wise sum, mean, min, max like dplyr?	-1.08
Reading very large fixed(ish) width format txt files from SQL Serve...	-0.58
Fast read different type of data with same command, better seperato...	+0.07
r data.table ( <= 1.9.4) join behaviour	0.00
Reshape2 dcast() function returning wrong values	0.00
R data.table column names not working within a function	-1.68
Select rows within a particular time range	-1.49
How to speed up missing search process in a R data.table	+2.03
Histogram-like summary for interval data	0.00
Reading aligned column data with fread	-0.72
Binning data across interval boundaries	0.00
dplyr: max value in a group, excluding the value in each row?	+0.66
Events in last 21 days for every row by Name	+0.28
R: Avoid loop or row apply function	+1.20
r count combinations of elements in groups	-0.76
How to solve gaps and island problems in R and performance vs SQL?	-1.18
Add columns with predefined values to a dataframe	+0.14
How do I take a rolling product using data.table	-0.30
Efficient way to perform running total in the last 365 day window	-1.36
Error reading Field with Double Quotes and Commas using Fread	0.00
Using dplyr window functions to calculate percentiles	+1.34
conditional grouping and summarising data frame in [R]	-0.16
Find regular expression in one column and add to a new column in sa...	-2.22