Very basic subsetting issue
158772
How to drop columns by name in a data frame
141208
subset a data.frame with multiple conditions
87873
AWK: Nested Conditional Subset of Rows
141379
All groups where underlying set has at most 4 elements
129205
A question about uncountable, dense sets in R
58090
Drop unused factor levels in a subsetted data frame
147236
How to select sub-lists having at least one element that matches a pattern
124325
Element of, subset of and empty sets
86902
Consider the smallest number in each of the $n\choose r$ subsets (of size $r$) of $S=\{1,2,\ldots,n\}$...
91485
Finding an uncountable chain of subsets the integers
147941
comparing sup and inf of two sets
39134
Subset data frame based on number of rows per group
45485
Dimension of a subset
98850
A positional number system for enumerating fixed-size subsets?
54171
Subsetting polygons from shapefile using ArcMap
31519
R: subsetting data frame by both certain column names (as a variable) and field values
108807
Subset of a cartesian product