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Rating Stats for

Karthik S

Rating
1497.27 (3,970,767th) 		Reputation
1,533 (106,965th)
Page: 1 2 3 4 5 6 ... 9
Title Δ
Find the # of days since the first case +0.61
Rename and create indicator variables? -0.34
restructure dataframe (pivot_wider) -0.25
Subtract next value from present R 0.00
Aggregating frequency tables in R -1.47
set the name order in pivot_wider() -1.49
Mutate to remove all parenthesis (and contents) from string in R -1.52
Transform Date Dataframe -1.96
Rows sequence by group using two columns -0.81
R - calculate annual population conditional on survival in every year +0.51
Why do I get an error when using `pivot_wider()` from the `tidyvers... +0.54
Replace non-repeating binary values -0.56
How can i select de lowest number per observation in a data.frame i... -0.27
sum of multiple columns based on column name +0.41
How to find a pattern in a string and extract it as a new column of... -0.68
Order columns based on max value in columns - R dataframe arranging +1.17
Multiply values within a column with a date range in R 0.00
Count sequence of rows by group and restart the count every time th... -1.61
How can I add several NA's as rows to data frame? -1.03
How to create a new dataframe from an existing one grouping by day... +0.54
R: How to calculate rates between observations by group? -1.26
Finding a Row with a Partial Match in another Data Frame and then w... 0.00
How to create new column if previous column value is Datetime using... 0.00
Coalesce columns and create another column to specify source +2.26
Create a new colum only with non-NA in specific columns [R] +0.90
Merging variables by a group +0.33
Calculating means for multiple groups in R 0.00
If number falls within range, then label it as " " 0.00
R: Multiply values values based on a logical conditionin in a data... -0.12
How to filter rows based on time (hh:mm:ss) using dplyr in tidyvers... +0.42
How to calculate the mean of some elements from a vector in R? +1.34
Convert all coumns ending in 'ID' to character in tidyverse +2.43
how to filter elements from a list based on index divisble by an in... +2.68
Split column in dataframe R -1.34
Is this possible to change subset of string to numeric value? -0.46
Use table summary on specific values in dataframe in R +0.95
Subset specific rows by first two strings +0.07
if_else and str_c (tidyverse) -0.88
Change from mutate_at() to mutate(across()) problem with function 0.00
How to remove rows in a dataset by matching a column in another dat... +0.05
Repeating rows of a matrix based on a vector in R -1.04
Interpolating data above the maximum value in a panel with R -0.57
Find the value that occurs most frequently and indicate relative fr... -0.01
Group by condition on elements of column 0.00
How to change specific places in data frame with respect to given f... -1.19
Grepl matching between two columns 0.00
R finding a substring in a column that's in a vector of strings 0.00
Remove rows which have less than string into a specific column +0.04
Split string, join another table using elements from split string a... +2.47
starts / begins with multiple columns grepl/paste0 -0.16