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Rating Stats for

Marat Talipov

Rating
1554.89 (6,661st)

Reputation
10,216 (14,910th)

Page: 1 2 3 ... 6

Title	Δ
Means of blocks of n columns in a data.frame	-1.34
apply() function to columns of a matrix and elements of a numeric v...	-1.48
Calculate duration of a time interval within a given period	-1.69
what is the most elegant way to find the first column of a data.fra...	+1.95
How to solve a matrix equation in R	+1.56
Filtering a dataframe showing only duplicates	-0.54
How to modify matrix multiplication to sum only positives or negati...	+1.64
Conditional math between rows in data table	-0.29
Reshape matrix by weighting variable	+2.15
Group data.table dates into groups by consecutive time intervals (s...	0.00
Labeling each value in a column by grouping from another column R	+1.73
Creating a 5x5 matrix with 0's lined diagonally	-0.09
calculating dataframe row combinations and matches with a separate...	0.00
Create groups from vector of 0,1 and NA	-0.00
Analyse multiple choice questions with multiple choice answers base...	0.00
Matching vectors by last element	+0.42
R: Convert a data.frame into a list with tags from data.frame	-2.08
All possible combinations of two vectors while keeping the order in R	+0.38
R - Relational Operators and Vectorization	+2.35
extrapolate data within the foreach loop	0.00
R - comparing two rows by columns and writing the result in a table	-1.76
Speed up Combn to ID matrix R	0.00
calculating sum of all against all columns with matching row count	0.00
Getting stale values on using ifelse in a dataframe	0.00
R - How to conditionally color the values of a data.frame and make...	+0.43
Replace range of matrix with 0 by row	-0.94
Determining if each vector element not exceeds all previous elements	+0.41
Converting a m x n matrix to a n*m x 3 matrix	-0.51
How to insert new row in a dataframe to make it equal row number as...	+0.98
Can I expect speed improvements from using Rcpp	-1.33
if x>0 use f(x) ,if x<0 use g(x) and plot all y in one plot	+1.02
Which vector posseses the nearest lower value?	+0.35
Have same heat legend for two different heatmap plots, ggplot2, Rst...	0.00
How to search part of string that contain in a list of string, and...	+0.14
Efficiently splitting a character vector	-0.43
Select rows in one table that comes from a range of two collumns in...	-1.07
Merge on multiple columns results in strange ordering	+0.43
Calculate the mean and sd of a column within a list	0.00
How to compute intersect area of 2 density plots?	0.00
Test if vector is contained in another vector, including repetitions	0.00
Semantic error in R, use of recursion	+0.46
Create a two-mode frequency matrix in R	+1.03
Consolidating multiple columns into one column in R	-0.20
sapply in R over a vector with individual elements of another vector	+0.42
R: using character vector subset within 'require' function...	0.00
R How to convert vectors of number with different length into vecto...	+0.41
Converting a list of data frames into individual data frames in R	+1.43
zip() in Shiny web app returning errors even though all files appea...	0.00
Saving ggplot2 Plot to be Rendered on Another System	0.00
How to check to see if a function in R is a constant function?	+1.10