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Rating Stats for

David Arenburg

Rating
1732.38 (66th)

Reputation
80,581 (1,024th)

Page: 1 ... 18 19 20 21 22 ... 33

Title	Δ
R manipulate dataframe	0.00
Ifelse behavior within data.table (R)	+0.32
Filtering on the first/min date/occurrence stored in a list of snap...	-0.56
Subset a dataframes in a list based on the content of a vector	+0.95
extracting exact path from text in R	-0.59
Transpose matrix	-0.40
How can I see what proportion of rows in a table have a certain ele...	0.00
R Extract character-number pairs from string/text	-0.66
Finding consecutive values by row	-0.43
R: How to count the number of unique values by group?	0.00
Vectorize creation of vector containing means corresponding to cate...	+1.46
r- if inside lapply	0.00
I want to use R to sample my timestamped dataframe	0.00
sort character vectors in R	-1.44
Creating a matrix of means based on column time series in R	+0.71
One random record from everyone month	+0.33
Converting list of data frames to a data table	-0.12
How to match/merge data from two different files in R?	-0.05
marking duplicate in a new column in R	+0.32
R Reshape - Sum and Combine	-0.45
How can I get the value of a grouping variable in a custom plyr fun...	0.00
extracting data using dplyr	0.00
Calculate time difference between two events (given date and time)...	-0.14
Generate fixed length random id by year as character	0.00
R - How to add rows for missing values for unique group sequences?	-0.21
How can I automatically create n lags in a timeseries?	+0.53
Replace NA in a certain column with values from equal key from same...	+0.32
R help: divide values by sum produced through factor	0.00
Getting values out of a data.frame based on an index column in R	0.00
R Conditionally Alter String	+0.90
How to fill matrix with 0	+0.32
Create a series of connectivity matrices in R	0.00
Order dataframe for given columns	-0.05
How to calculate the time duration until the value in one column is...	+0.85
Applying some functions to multiple objects	0.00
pick rows from every group in data frame only when condition satisf...	+1.23
Trying to generate averages across multiple lists	+0.20
In R - how can I get unique values in dataframe column into a dataf...	-0.35
Replacing 0 by class mean	-1.10
How to grab the first instance of a double-ordered pair of columns...	-1.30
Remove rows from data.table in R based on values of several columns	0.00
order two columns, conditionally select values, then run cumsum fre...	+0.15
R: constructing a matrix based on expanding two lists	-1.46
R regular expressions, trying to capture a group	-0.28
Create an new column in data frame : index in group (not unique bet...	+0.33
increment colnames of a data.frame by 1	-0.13
collapse dataframe by similar rows	+0.94
Row-wise correlations in R	-1.82
Dummy variable for each first observation of a categorical variable...	-0.92
use one variable conditioned on another	0.00