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Ronak Shah

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1624.06 (999th) 		Reputation
80,694 (1,021st)
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Title Δ
How can I prevent `<<- ` from assigning in the global environ... -1.01
Paste two levels of different factors given conditional statement +1.70
Compare a value to null. Why is this true? +1.50
Aggregate on a daily basis in R -0.02
Remove negative values from nested list 0.00
Count consecutive NA for columns in data.frame in reversing order 0.00
Match data by start and end times +0.50
R using limits to find data in data frame 0.00
Match and count rows containing numeric characters +0.78
Subset a dataframe where number of matching variable is k +1.85
Calculating categorical average with filtered data +2.00
Counting Words in vector +1.82
Remove several rows based on one row +1.77
How to add a column with values corresponding to another column? -0.56
Sum variables using R by categories condition +1.93
R: Conditionally replacing values based on column pre-fixes and suf... +1.59
matrix index subsetting with another matrix +2.13
How to filter data based on a column name dynamically in R? +1.95
Find if a date in a date vector falls between two dates +0.02
How to convert a table without any col and row name created from a... +2.13
Replace initial NA values with zero in a row until non NA column -1.00
Combine data from previous week with current week in R +0.08
How add named element to R vector with name from a variable +0.52
Extract the max values for row and column +0.52
Summation of a sequence 0.00
Create a new variable based on modal number of observations +2.48
How to construct the date from year and day of the year -0.68
Compare vector to subset of row in a data.frame -0.80
Extracting rows from data frame in R based on combination of string... 0.00
Conditionally count rows based on comparing values between column -0.50
Sort data in a data frame and rank them +0.52
How do I convert "January 30, 2015" to a date object in R? -1.09
R: Vector of keys and vector of values to list +0.54
Find the minimum of a vector ignoring certain numbers 0.00
Reorder a subset of an R data.frame modifying the row names as well +1.28
Extract year from date string in this format Dec-06, Jan-90, Feb-76... +0.24
how to replace Index values in a dataframe by group IDs in r +0.24
Remove specific rows from data frame conditional on caseid and year +1.31
Add value to column and previous row if condition is met -0.72
Increment by one to each duplicate value in R +0.70
How to display a column based on a condition that meets true for co... -0.47
Convert all letters from uppercase to lowercase in a sentence excep... -1.74
Dplyr replace value based on function of previous column and row +0.05
purrr::discard How to delete elements in a vector containing one or... +1.21
How to rename data frame column by taking only the first value of t... +1.97
Find row-wise duplicates by groups -2.09
Count number of occurrences for every n row in R -0.13
Convert a numeric value to a time in R -2.05
remove certain vectors from a list +0.86
How can we perform condition checking between two tables in R +1.87