Deleting columns from a data.frame where NA is more than 15% of the column length
68532
Delete columns/rows with more than x% missing
7428
Replace NA's with 0 for raster data using R?
33457
Reshaping data.frame from wide to long format
5292
Convert data.table to data.frame (i.e. undo setDT)
36003
Summarizing multiple columns with data.table
141208
subset a data.frame with multiple conditions
78236
How to perform imputation of values in very large number of data points?
86329
Filter data.frame rows by a logical condition
110378
How to change data between wide and long formats in R?
56874
How can I remove all duplicates so that NONE are left in a data frame?
106494
Create a data.frame where a column is a list
132104
Removing not-a-number entries from an array of numbers
156442
Remove multiple objects with rm()
152949
Reshape multiple value columns to wide format
45771
Add (insert) a column between two columns in a data.frame
151001
How to ignore NA in ifelse statement
137286
stacking columns in data.frame into one column in R