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Rating Stats for

David Arenburg

Rating
1732.38 (66th) 		Reputation
80,581 (1,024th)
Page: 1 ... 8 9 10 11 12 ... 33
Title Δ
Split arbitrary column into melted data frame +0.92
Merge rows together by condition in R +1.31
Subsetting by row condition in R +1.79
How to perform pattern matching in R from reverse direction? +1.69
Correlation in Panel Data with different number of observation for... 0.00
Fast creation of data.frame 0.00
understanding apply and outer function in R +0.97
Split string in each column for several columns +0.25
Can you use a data.frame twice in a dplyr chain? dplyr says "... +0.24
Matrix change fun -0.30
Get Standard Deviation From Groups in Data Frame +0.17
R: Calculate Variance on all Values after the first Non-Zero -0.54
Replacing or imputing NA values in R without For Loop +1.29
Count occurrences of a value on melted data using dplyr +0.24
Gather ragged data frame into key-value columns 0.00
Extracting capital words and extracting the last word in a string -2.12
R function handling a vector +0.24
calculate days per year from data frame 0.00
pattern matching R +0.26
R - use indices and content of list to merge two dataframes [R] +1.12
R data.table set new column with logical value if a weekday is betw... -1.33
overlap join to calculate averages within intervals? +0.24
Constructing an R data.table by selecting each row from an array of... 0.00
Use dplyr's summarise and summarise_each together? -0.53
conditional replacement of a value for a column of a specific row o... 0.00
Simple function does not work for `dcast` - reshape2 +0.88
Replacing the last value within groups with different values +1.65
How to select individual rows from duplicates based on the highest... +0.26
How to take an average of dataframe by pieces? 0.00
R dplyr retain rows up to first occurrence of a value in a column 0.00
Return only columns containing NA in R -0.60
Get the last element of a matrix +1.04
Showing multiple columns in aggregate function including strings/ch... +0.23
R data.table multi column coversion by names 0.00
match 2 column elements based on a differece within a range 0.00
Identification of unique observations in a partial dataframe (defin... +0.26
Converting large matrix to dataframe 0.00
Aborting execution of code in R(-Studio) -0.91
finding different row in group in R +1.00
R extract Date and Time Info +0.94
change value to percentage of row in R 0.00
Combining irrelevant/similar observations into one (others) 0.00
Group by operarion in R +1.01
Update a data.table based on another data table 0.00
Insert columns by column index (unaltered column order) 0.00
How to determine the first maximum value in a variable in R? +0.22
R: Window function +0.24
R: Subsetting on increasing value to max excluding the decreasing +0.20
Unlisting columns by groups -1.09
Finding index of cummax inside a dplyr mutate? 0.00