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Rating Stats for

Jilber Urbina

Rating
1570.53 (3,984th)

Reputation
44,632 (2,375th)

Page: 1 ... 9 10 11 12 13 ... 21

Title	Δ
calculate mean by group by avoiding first value in the group in R	+0.39
Find index of specific column in R	+0.19
name and place each element of a list in Global Environment	+1.67
Replace a given character in a string variable with a character fro...	-0.63
R Regression: referring to multiple independent variables simultane...	0.00
How do I add a suffix (or prefix) elements of an existing list?	0.00
Using apply in a 'window'	+0.79
Skewness per row	0.00
remove all rows for one id R	+1.50
Extract characters after focal character "."	-1.34
How do I tell R to fill the circle dots with colour on a scatter pl...	0.00
R split the string from right most to left	-1.29
How to return the 1st row that is 10 percent above the minimum per...	0.00
For loop: replacement has one row more than data	+0.39
Replace all values lower than threshold in R	+0.05
How do I multiply (square, divide, etc.) a single column in R	0.00
Replicate each time with different standard deviation	+1.92
Efficiently collapsing rows in an R data frame	-0.59
Finding distribution of sample mean by central limit theorem	-0.09
How to change the way split returns values in R?	+1.74
All possible ways of ordering n values	0.00
R : Computing maximum likelihood estimator	0.00
Debugging A Conditional If Chain	-2.03
R Calculate a function by groups and on many variables	+2.06
Syntax for referencing into results of summary frequency counts of...	-0.09
Using vectors instead of loops	-0.60
Generating frequencies from CSV file	-0.19
count a variable by using a condition in R	+1.12
array averaging by parts	+2.27
Recoding in R: Transform 2 numeric rows of data into one factor row	-1.13
R:Summing up values of a column row by row and create new column	0.00
Indexing With A Logical Test	+0.12
Re-writing a complicated ddply with aggregate	-1.02
Group variables in a dataframe R using a specific list	-0.31
R replace values in one column upon matching conditions in another...	0.00
Reshaping data frame in R according one column	+1.79
break a for loop when a specific condition is satisfied and continu...	+2.17
function for getting coordinate of matrix element	0.00
multiple if, else statment and getting error.	0.00
How to compute"mean","sum" for matrices?	+0.22
as.numeric is rounding positive values / outputing NA for negative...	0.00
Using rbind to merge data frames	+0.39
Optimize function with nlm and optim	0.00
Translate mathematical function into R	0.00
How to apply function to each of the vectors in the vertical (3rd)...	0.00
Reformat a correlation matrix in R to remove row names, column name...	+2.14
Fill all cells of a matrix with the corresponding row sum	+2.08
R :histogram of 100 exponential numbers with mean=10 & do the s...	-0.76
Generate all possible n choose 2 pairs from a vector in R, efficien...	0.00
R - tapply produces NULL on empty cells	0.00