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DatamineR

Rating
1566.40 (4,536th) 		Reputation
8,593 (18,203rd)
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Title Δ
Match row value with column name and extract value in R +3.63
Counting combined occurrences across two columns +3.98
Summing columns on every nth row of a data frame in R -2.79
Variable label position in ggplot line chart -2.58
calculate each chunk by group using dplyr? +1.09
How to consolidate a data frame in which the date variable is repea... +3.84
ggplot2 geom_line indicating group size -0.48
generate normal distribution with exactly N elements in Y bins 0.00
Removing duplicate rows based on column while keeping the highest v... -0.79
Error in sample.int(length(x), size, replace, prob) : invalid first... 0.00
r return common rows for each value in a given column +3.21
How to apply a function to a list of matrices elementwise 0.00
One random record from everyone month +0.49
How do you convert bunch of columns to numeric in R -2.48
Generate rows between two dates into a data frame in R -1.76
Perform an ANOVA for each individual level of a factor in R 0.00
How to melt a dataframe into multiple factors -0.24
Summing by groups of rows in R +3.07
doing t.test for columns for each row in data set -0.30
Time Series for Periods Over One Year 0.00
Create sample vector data in R with a skewed distribution with limi... 0.00
how do you extract the columns that contain a certain text/string i... +1.69
R function that looks through previous dates -0.21
Sort dataframe by column group length in R +4.36
Subsetting in R based on shared characters in a row name +1.97
How can I separate my data table based on a binary criterion (gende... +0.14
How can I simulate time series a) with unit root and (b) near stati... 0.00
How can I split a dataframe into odd and even years? +3.96
How to use values 2 rows ahead or behind of current row in data table +0.02
How best to collapse two factors with NAs into one variable +0.22
Change legend on ggplot 0.00
splitting string expression at multiple delimiters in R +0.21
How to reshape and summarise categorical data from long to wide? +0.35
Identify points in QQ plot of ggplot2? 0.00
Calculate the trend for 2000-rows time series and isolate the abnor... -0.17
Split a vector into unequal chunks in R +3.43
R data.table: Selecting minimum value of chron within group -0.04
Add margins not working -2.67
Merging code values of categories to dataset in R -2.06
How to apply a function over two series of sequentially labelled va... +4.73
In R, how do I extract minutes and seconds from characters +4.55
mapply over a function yields erronoeusly the aplication of another... 0.00
Applying auto.arima() across list elements to forecast 0.00
find value from subsequent row based on multiple conditions (withou... +0.44
Remove columns in a matrix that have a match with the column name i... -3.48
R: data frame - How to add up values and consolidate duplicate valu... -4.11
Combining (m,m,n) arrays of the lists into an (m,m,n) array +4.33
several ggplot2 plots on top on an image +0.20
Why can't R report the name for a corresponding max value? +4.53
Write column names to variables based on a condition -3.65