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Rating Stats for

FENG QI

Rating
1484.05 (4,477,341st) 		Reputation
35 (1,246,290th)
Page: 1
Title Δ
How to show only one horizontal line for a specific axis value in R... +4.40
Dplyr dataframe manipulation -2.79
dplyr unique rows sample_n -4.02
How to randomly sample dataframe (sample_n) and calculate summary s... 0.00
Group 2 variables (age & gender) and find the amount 0.00
Avoiding nested loops but iterate over 2 values using (l)apply? -3.65
Calculation on each value inside a vector, and aggregate the result... 0.00
Choose groups to keep/drop in data.table -0.84
Subtracting columns in two dataframes based on another column -4.82
R: factor to character does not work -4.23