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Matthew Lundberg

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1566.78 (4,478th) 		Reputation
36,309 (3,118th)
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Title Δ
lapply and the save function in R -2.12
Change matrix elements with the respective column names (conditiona... -0.98
Why I got different answers when I try to reform the code using ife... 0.00
How to Find & replace values in a table based on values in anot... -0.44
How to calculate value using selected cells in R -0.34
R: function that returns a vector of unique integers with multiple... 0.00
Dynamically numbering files in R with placeholders using an If-elseif -0.35
Convert list of dates from character to date format +1.74
R - Median of a Frequency distribution, grouped by another variable -2.33
R loop and if else -2.33
Pattern finding in a list of character vectors +0.59
Remove duplicate rows of a matrix or dataframe -1.41
How to edit all values in a column in csv in R? +0.38
R friendly way to convert lots of R data frame columns to lots of v... -0.99
R using if else statement for multiple conditions +1.70
combining the vectors to and form a 12x2 matrix -1.29
R - Compute Cross Product of Vectors (Physics) +0.43
Extract time from timestamp? -1.27
Create new column based on partial string matching of other column... -0.37
How to reverse a column in R 0.00
Matching wildcard arrays in Excel or R 0.00
how to create a vector of equally-spaced values from a dataset in R? +1.92
Progressive appending of data from read.csv -0.11
Color area under curve with Lattice 0.00
How to make %in% work with characters in R? 0.00
grep float with percent sign in R +1.74
Lattice Plot - Add lines through mean of y values -1.56
Avoid For-Loops in R -0.61
Open a .bat file, out of a folder, off a flashdrive 0.00
Regression line through grouped data sets in xyplot (R) 0.00
Vector recycling is not working when assigning to data.frame 0.00
Hiding output when saving into variable 0.00
R apply returning rows but want colums 0.00
"Cumulative difference" function in R 0.00
Format a collumn of prices in CSV in R 0.00
How to get the exact value of factorial(100) 0.00
R Programming: Condition giving always TRUE +1.04
Generate all subsets of {0,1}^N with exactly N/2 zeroes/ones -0.00
Error: assessment nested too deep ; infinite recursion 0.00
Converting the row of a data.table to a vector -0.30
How to use outer product to compute pairwise Euclidean distance in R 0.00
Using lapply instead of for loop in r +0.42
Find row sums for a subset of the columns of a matrix -0.85
How to handle missing values in crossprod in R? -0.56
R Return max count in vector 0.00
R programming_how to do statistical analysis by groups 0.00
How to filter R datatable based on external column vector -0.16
Is it possible to solve an algebraic equation in R? -1.35
how to convert rows into columns without repeition 0.00
More efficient method for populating a matrix than nested for loops 0.00