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Rating Stats for

David Arenburg

Rating
1732.38 (66th) 		Reputation
80,581 (1,024th)
Page: 1 ... 4 5 6 7 8 ... 33
Title Δ
Using R to subtract subsequent rows for a given value +0.21
Subset different vector elements within a list 0.00
Make R user-defined-function for data.table commands - How to refer... 0.00
Replacing NA's in each column with the median of that column +0.74
Repeated rolling join without looping 0.00
Split contents of column into two rows, for conversion to STRUCTURE... +0.67
What is a concise and clear idiom for mapping values into a data.ta... -1.19
Fill in-between entries in an ID vector +1.03
R to recode variables if the categorical variable's frequency l... +1.04
How to find the number of cells in a column that match another data... +0.19
Progressive concatenation of a column by a group -0.71
Data.Table rolling join by group -2.42
Select rows in one table that comes from a range of two collumns in... +1.07
How to create a matrix by averaging the elements of another matrix... +0.62
R data.table interval +0.22
Regex to remove white space between tags in gsub R +1.33
Aggregate rows in data frame +1.07
subset lists based on a condition in r -1.94
Create class intervals in r and sum values +1.01
R data.table to determine if a person is new or existing 0.00
detect non ascii characters in a string +1.14
Function faster than apply(..., ..., range) in R +0.90
Reformarring complex factor vector with comma separation after thou... +1.15
Remove multiple columns and replace values of columns of dataframe... +1.19
Regexp to split month from year in date mmyyyy -0.12
Find row indices of matches in data.table (can I binary search?) 0.00
Reshape a data frame into a wide shape 0.00
R: Remove repeated values and keep the first one in a binary vector +0.76
R - dplyr crosstable of melted paired data 0.00
R: Moving sum of one column in a data frame based on values in othe... +1.32
R, How to Vectorise this Operation +0.22
R: assign previous non NA value 'n' times based on value in... +0.63
join tables after group_by -1.07
Can I use the R data.table join capability to select rows and perfo... +1.77
Bind two wide frames into panel in R +0.24
Create proper input names for the hts character argument R 0.00
Counting consecutive patterns in strings using R +0.50
Fetch the values in a data.frame with "winning streak" &g... +0.26
How to calculate the difference of a list of various by key? +1.23
R: convert list of numbers from character to numeric +0.75
row-wise first/last occurrences from column series in data.table +1.21
r - copy value based on match in another column +0.74
R: Updating NAs in a data table with values of another data table -2.11
Use data.table to calculate the percentage of occurrence depending... 0.00
Equivalent of index - match in Excel to return greater than the loo... 0.00
how to transfer my data(<3&>1 to 1; >3 to 0) in R? 0.00
R Extract patterns in strings vectorised within a dataframe 0.00
Extract words from a column of data.frame in R +0.76
How can I select and rename a long list of columns from a data fram... -2.10
flatten nested list by averaging vectors +1.17