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Rating Stats for

Matthew Lundberg

Rating
1566.78 (4,478th)

Reputation
36,309 (3,118th)

Page: 1 2 3 ... 17

Title	Δ
How can I simplify my code in R?	+1.67
Why `a` and `b` don't generate the same set of numbers using `m...	-2.40
Find the count of each category in a datafrme for uniques value of...	-0.32
Regex in R: matching the string before a sequence of characters	+0.34
R code became slow	0.00
How to convert "A01" to "A1" using R?	-0.60
Change data set from wide to long while retaining group id, and als...	+1.45
filter R dataframe to include only rows with a space between two ch...	+0.97
How to extract numbers between multiple underscores	+1.27
Splitting character string in R based on characters	+1.55
Why does my index go to zero in r	0.00
Skip paste0 entry when value is zero for the entry itself and entry...	-2.37
Apply a dataframe of boolean values onto another dataframe in R	+0.50
Word boundary regex issue	-1.05
Access denied when writing to file in RStudio Server	0.00
How to generate 1-1 mapping of combination of variables to numeric Id	-1.74
How to make the apply() function faster?	+0.40
the for loop shows NA for every iteration except for the last one	0.00
Using grep() in r to find index	-0.29
R - how to convert two `for` loops to `lapply`?	0.00
How to remove unicode <U+2032> from string?	-0.02
The condition has length > 1 and only the first element will be...	+1.69
how do you convert a factor that has 3 digits miliseconds to dateti...	+0.41
Divide two difftime objects	0.00
Element-wise addition of two matrices/data frames	0.00
Filter list in R which has nchar > 1	+1.60
R - for loop alternative to conditionally populating tuples?	0.00
is there a way to determine if R code is running on the client (lap...	0.00
How can I insert actual values in dataframe as columns in R?	0.00
Make bins in 100000 intervals and count occurrences with R	+0.39
Tail recursion in R	+2.18
data frame from character vector that contains three comma seperate...	-0.51
R: column reference to itself	0.00
How do I merge these two data.frames and keep the correct order?	-0.08
how to create dataframe like this (provide daily first trip record)...	0.00
R- Fill columns in df	0.00
apply in R returns weird results	+1.31
R data frame sorting	-2.45
r - fill columns in data frame	+0.81
Error while aggregating factor variable- argument is not numeric or...	+1.57
Speeding up ifelse() without writing C/C++?	+1.15
passing additional parameters to two function	+1.73
Merge Two different Data Frame (like VLOOKUP)	+1.63
Inverse to cbind() function R	+2.14
Changing a list inside a function	+1.35
Creating a random number of variables, and then summing over them	0.00
How to use loop to apply as.POSXIct to a column of multiple files	-0.17
For loop checking if values are equal	-1.59
long to wide with out timevar	0.00
aggregate command in R	+1.77