How to get the levels number in R?
114928
How to drop factor levels while scraping data off US Census HTML site
2060
How do I create group data in a category with more than and less than in R?
152206
what does each runlevel number stand for
68438
getting a sample of a data.frame in R
59695
How to force R to use a specified factor level as reference in a regression?
11972
Access lapply index names inside FUN
79403
Getting a stacked area plot in R
101389
Get 10+ Level Hierarchy Relationship
142378
Levels: how do they work?
43575
R cleaning up a character and converting it into a numeric
35647
Get the right hand side variables of an R formula
135894
How can I generate ascii "graphical output" from R?
133825
Reorder levels of a factor without changing order of values
14942
Extract a string between patterns/delimiters in R
54549
How do I compute the density of R?
71176
Finding Quartiles in R
76711
How to perform natural (lexicographic) sorting in R?