Updating factor levels while filtering R data.frames
58090
Drop unused factor levels in a subsetted data frame
43747
Remove rows with all or some NAs (missing values) in data.frame
59773
Adaptive moving average - top performance in R
41944
R Time Series Issues
133825
Reorder levels of a factor without changing order of values
15995
durbinWatsonTest() in R for non time-series data
152302
R compute percentage values in data frame
90575
How do I replace NA values with zeros in an R dataframe?
76906
Penalized methods for categorical data: combining levels in a factor
151001
How to ignore NA in ifelse statement
12697
Clustering of mixed type data with R
133638
Fitting multilevel models to complex survey data in R
83044
Spatial subsetting SpatialPolygonsDataFrames completely within selecting area using R
52697
Apply a function to a subset of data.table columns, by column-indices instead of name
24228
How to add a factor column to dataframe based on a conditional statement from another column?
110612
Conditional summing (R)
97533
How to find differences in elements of 2 data frames based on 2 unique identifiers