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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
how to run chisq.test in loops using apply -0.30
How do I read large numbers precisely in R and perform arithmetic o... +1.66
R-apply a function to each row of a matrix, with a changing argument? +2.27
extract a single column -1.74
Creating user image pattern, identicon, of stackoverflow.com 0.00
Subsetting a data frame by specifying a vector of length >1 for... 0.00
Use variable as string name 0.00
Replace all instances of numbers in a dataframe with strings R -1.04
Combining rows in a data.frame -2.00
Combining rows in a data.frame +2.00
Using a repeat loop to look for multiple outliers? 0.00
merge by groups of rows 0.00
Cumulative sum based on specified values 0.00
How do I combine rows that have similar values? +1.69
referencing a list of variables to do calculations with in r -0.08
Matching 2 columns in 2 separate data frames with different order,... 0.00
More efficient way to calculate runs in subgroups -1.72
Ifelse in R or apply 0.00
subset using R language +0.41
Counting POSIXlt times by day -1.18
R lattice histogram add the mean as text to each histogram 0.00
Removing row from data frame by assigning NULL value 0.00
Undefined column selected in R 0.00
How do you pivot data from a list of data frames in R? -0.59
Strange behavior in subsetting R data frame -0.91
Subset data based on partial match of column names -1.34
Split one column into two -1.17
R 3.1.0 - What is True Matrix Multiplication and what is is used for? 0.00
all possible combinations within subset, multicolumn -0.34
function not working R +0.40
R Restrict a cycle 0.00
How to automate read.csv command in R? +0.39
Why does data get altered while applying a function 0.00
How to edit names using regular expression in R? -0.60
add relative frequency by factor to a data frame -0.37
Iterate a data frame over a list of functions 0.00
subsetting error in R +1.73
How to recognize a catagory from a matrix 0.00
Making a new column in data frame by matching a column with a colum... -0.32
Read integers from binary <8 bits in R +1.74
object of type 'builtin' is not subsettable 0.00
Numeric comparison during merge in R -0.27
which() function for lists in R +1.46
Combining factor levels in data frame column +1.35
Filling R matrix using 1 column of data +0.42
How can I read this fortran binary file in R 0.00
Filter xts objects by common dates +2.39
R Programming: "More Columns than Column Names" 0.00
R: How to convert from loops and rbinds to efficient code? 0.00
How to create a matrix in R using the rows and coloum data? -0.69