StackRating

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

Frank

Rating
1617.40 (1,172nd) 		Reputation
57,070 (1,677th)
Page: 1 ... 25 26 27 28
Title Δ
R data.table finding the mode for a group of data +0.92
R - data.table by group by - order of keys and missing keys +4.32
Subsetting a dataframe depending on a column -0.42
combining join with "or" in data.table package +2.99
Compare two lists in R +1.79
merging endpoints of a range with a sequence -3.63
How do I group by a variable and list by a random order in data.tab... -4.08
how to manipulate mulitple columns in R -3.79
How to transform a vector using a dataframe(associate table) in R l... +1.78
row-by-row operations and updates in data.table -0.60
Create variables for each group specified in a data.table +4.05
How to apply same function to every specified column in a data.table 0.00
R: operate over subset of columns in data.table +2.23
table by row with R +0.22
Tabulate a data frame in R -2.01
Executing function on objects of name 'i' within for-loop in R 0.00
Using R to sum values for cross-sectional unit in panel data +4.38
Result from Cor() in R doesn't logically evaluate as I'd expect +1.47
Changing every set of 5 rows in R +4.47
Data frame to matrix without using reshape +0.92
Extract matrices from a list of mixed data types -3.27
How to get the 95th and 5th percentiles separately? 0.00
table() generating NAs when there are no NAs in the underlying data +2.30
using R data.table with 'all()' to subset data -2.69
Calculating a weighted mean using data.table in R with weights in o... 0.00
data.table object trying to effect ddply like operation using by() 0.00
Changing values within a function +0.04
convert data.frame to data.table column missing 0.00
How to run lm for each subset of the data frame, and then aggreage... +2.35
Write csv or table variables to file 0.00
Retrieve values in each cluster in R 0.00
data.table := assigning and grouping 0.00
length() doesn't work in aggregate function using dot notation -2.22
Referring to data.table columns by names saved in variables +2.29
How can I reshape my data.table efficiently +4.94
concatenating Lists in R -1.75
R aggregate over time series, missing dates for some groups +5.53
Renumbering in R -1.85
How to convert a matrix of strings into matrix of 0 and 1's -2.56
Aggregating by unique identifier and concatenating related values i... -1.56
Nested List to Single Table (Merge By Column Name?) -3.15
How can I modify the variable named in a dataframe cell? 0.00
Last occurrence of value change -3.15
How to add a factor column to dataframe based on a conditional stat... -3.77
Check the element of a vetcor is between the element of second vect... -1.50
Take the positive part of values in a matrix in R 0.00
How to organize scores that belong to same condition in R +0.10
naming a list when returning values from data.table -2.48
How to get column name of the variable with the top 10 highest valu... -2.34
Create a factor variable using the quantiles 0.00