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Rating
1575.13 (3,482nd)

Reputation
32,295 (3,688th)

Page: 1 2 3 4 5 ... 34

Title	Δ
Replace going on NA values with sum of another column	-0.10
How to merge 2 string columns in one dataframe?	-0.48
Loop over dataframe rows and write functions with unknown parameters	-0.64
How can I reshape my data, moving rows to new columns?	+2.19
Replace values in multiple columns by values of another column on c...	-0.37
Sum rows based on names and create new df	0.00
Extracting column names with condition from a data frame	-0.21
Count rows in data table with certain values by group	-0.64
How do I combine multiple rows into one using R?	0.00
Round depending on number of decimal places	+1.39
Spread unique values (in multiple columns) to different columns and...	-0.28
How to create a postive and negative sequence	-2.16
How to aggregate the ranked data?	-1.62
How to get the absolute value while noting if the number used to be...	+0.54
Merge multiple columns into one and rename values based on column i...	-1.72
Transform a nested list to dataframe	+1.35
Replace with multiple elements in a column based on condition	+1.47
Create iterator on DF based on another column	+0.24
Modifying a list based on the length of its shortest string	+0.38
How do I keep only the Top n rows in a column	-1.03
Identify groups of following dates in a dataframe	-2.22
Fill columns with most recent value	+0.37
creating dummy quantile variable from continuous variable	-0.50
Using Apply to avoid "the condition has length > 1 and only...	+2.03
Convert (format) clock time from H:MM to HH:MM	-1.00
How can I create a table of variable names and their levels?	0.00
How to sum numbers considered as strings?	+0.84
Collapsing rows using two vectors as indicators	+0.86
small Time Series Analysis	+2.20
Split a data frame by column using a list of vectors	-1.45
Extract rows with duplicates entries in one column satisfying a giv...	-1.79
Multiply each row of one dataframe by all rows of a second dataframe	+1.67
How to replace NA with set of values	+0.15
how to extract number (X>=0)	+0.75
How to extract from string with regex, a word and or condition	-0.99
Vectorized conditional string manipulation	-2.35
convert event dates to time-event columns for survival analysis	+1.83
Split by variable in a specific group using dplyr	-0.96
Count NAs between first and last occured numbers	+1.63
Replace column values using key value dataframe	+0.01
Rearranging character vectors in a row of a matrix	+0.90
Make dataframe from list of lists but each element a column	+1.26
What the best way to find minimal difference and corresponding valu...	-2.05
Summarize a Variable by All But Group	+1.45
Separate rows into columns using the first split character	+0.10
Create new data frame column	-1.01
evaluate expression within a data frame	+0.17
Avoid for loop when loop has an increment	+0.54
count the number of columns for each row by condition on character...	-0.70
filter count distinct > 1	0.00