StackRating

An Elo-based rating system for Stack Overflow
Home   |   About   |   Stats and Analysis   |   Get a Badge
Rating Stats for

Jaap

Rating
1662.99 (393rd) 		Reputation
58,717 (1,592nd)
Page: 1 ... 8 9 10 11 12 ... 23
Title Δ
subset where there are at least five consecutive years in a data.fr... +0.72
Count rows in second data table based on column values of first wit... +1.25
Data.table: operation with group-shifted data +0.94
Multi line title in ggplot 2 with multiple italicized words +1.90
Combine dataframes with common column names but different values in... 0.00
Read a column of dates from Excel into zoo (or xts) 0.00
Extract first and last values among a number of columns in data frame +0.34
How to scrape mutiple tables indexing both year+page? 0.00
geom_dotplot() loses dodge after applying colour aesthetics +1.66
How to mutate multiple variables without repeating codes? -0.31
Dynamic and conditional inserting of new rows that come after a cer... 0.00
sqldf RLIKE function 0.00
dplyr - Multiple summary functions +0.79
Assigning names to 12 monthly data frames in a list +0.35
Conditional rolling sum 0.00
How to group data when data are interspersed with group headers in... -0.16
Choose column name of the first column which fits certain logical t... +1.49
Find similar elements of a vector and modify everything inbetween +1.60
R: Count event occurrence and assign it to individuals according to... -2.96
From which row a data.frame variable have a constant value -0.13
ggplot: add violin to a line graph +0.34
adding a column to a data frame in R based on the rank of another c... -0.59
For each row in a data frame, create multiple rows based on date ra... 0.00
Calculating mean over consecutive days that meet a condition +0.34
How to convert text separated with '-' to dataframe in R +0.34
How to see n rows after a specific row +1.16
Convert a list in a dataframe to a lines -2.49
Filter a data frame based on matching values (exact) between two co... -0.20
Removing duplicated rows in df based on column of matches in R +0.87
Loop through df column, comparing to list and creating new column +0.89
How to convert complex JSON data into a single dataframe? +1.75
Convert sequence of integers 1, 2, 3, ... to corresponding sequence... +1.18
Reshaping untidy and unbalanced dataset from wide to long 0.00
Calculate percentage change from a base date within groups 0.00
grouped data frame to list +1.05
Filter window with dplyr: find matching row, and keep subsequent N... -2.15
Remove duplicate rows in a data.frame by group -0.04
Coerce dataframe to numeric, aggregate and how to get string variab... +0.35
R In data table change row order +0.35
Subsetting data table based on patterns in data 0.00
r - Create a sequence number for each row within a category (define... +1.06
How to convert all column data type to numeric and character dynami... +0.43
Add new column to a data.table; created using assign in loop 0.00
Find records belonging to one group but not other and vice versa us... 0.00
How to merge and sum two data frames +1.11
ggplot2 facets: Different annotation text for each plot 0.00
Change aesthetics of nested facet in ggplot2 +1.79
Re-organize database by merging rows from a variable +1.94
Iteratively and hierarchically cycle through rows till a condition... +0.35
data.table remove rows based on lag value by group +2.02