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Ronak Shah

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1624.06 (999th) 		Reputation
80,694 (1,021st)
Page: 1 ... 206 207 208 209 210 ... 233
Title Δ
Add a boolean column to a data.frame indicating wether specific col... +1.62
How do I count the number of duplicates or occurrences of values in... +0.31
Multiplying odd numbers in a vector -1.24
Calculating values as percent changes based on unique ID and dates 0.00
How to extract substring with Regex in R +1.43
drop rows programmatically based on contents of list column +1.40
How to keep group column in each tibble and rename them? 0.00
Calculate difference between observation in dependence of value of... 0.00
How to extract unique rows by ignoring NA's in R +0.31
Table with minumum frequency +1.89
Is there a dplyr function to determine the most commonly encountere... -1.10
Return whole group when filtering with dplyr in R 0.00
How to replace values in one df with values from another df using a... +1.20
Change only specific column names based on a data table 0.00
Comparing variables of with a vector of solutions -0.35
Add rows with dates till January next year +1.21
Using count(), aggregate(), data.table () or dplyr() to summarise t... +1.63
R functions looping -0.85
how to name the elements of a list on the fly? -0.52
Calculate conditional cumulative sum 0.00
How to choose columns with only NAs and a unique value and fill NA&... +1.81
Count number of unique values for all rows above +1.04
Selectively modify single element of a list in a list-column (tidy... 0.00
how to separate a variable based on another variable -0.88
Use values in R dataframe as index to subset and summarize another... -2.40
Changing values in dataframe iteraring over all rows and multiple c... -1.26
Parsing Multiple Conditions through grouped variables with dplyr +1.35
Vectorized solution for using previous value in a column under some... -0.86
apply function by name of list +1.98
How to insert/merge multiple extracted subsets into a dataset based... 0.00
What's the best data structure to hold key pair values in R? +1.64
remove rows from dataframe based on value, ignoring NAs +0.97
Extract rows from a data frame under certain conditions -1.06
How do I alias a column name in a for loop? +0.83
mutate new boolean column by comparing two columns -2.76
Change specific columns to NA when another column equals 0 -0.58
Using `lapply` to rename selected columns in list 0.00
How do you extract the time unit when using difftime()? -0.19
Create a new column using the non-blank value from each row using a... +0.13
How to keep dropping the first value, until the sum of the vector i... +1.18
Obtain Object From Global Environment and Slice It Like a Dataframe +0.29
How to Parse string of the format 04 Nov 2018 07:39 AM 0.00
Create boolean column in R dataframe that returns true if another c... +0.27
Why R can not find "NA" when comparing two data set using... 0.00
Restructuring Dichotomy variable -0.47
How to count number of times a variable exceeded its threshold . Ig... +0.32
Get row before the negative value in certain column 0.00
Finding rows based on condition 0.00
Loop through 2 dataframes to identify common columns 0.00
Extract substring after the final dot -2.17