Finding strings in columns of dataframe in R
140097
R grep: is there an AND operator?
146061
How do I find numeric columns in Pandas?
142799
How to sort a character vector where elements contain letters and numbers in R?
34485
Finding common characters in two strings
137286
stacking columns in data.frame into one column in R
44049
How can I find last row that contains data in a specific column?
111539
Comparing the two set of data from columns
42781
Dynamic column names in data.table
82140
How do I delete rows in a data frame?
131373
converting string IDs into numbers in a multilevel analysis using R
145792
Search for a string in all tables, rows and columns of a DB
4982
How to combine multiple conditions to subset a data-frame using "OR"?
145514
Extract all numbers from a single string in R
131852
Extract matrix column values by matrix column name
156171
Sort columns of a dataframe by column name
84325
Dynamically select data frame columns using $ and a character value
76907
Select / assign to data.table when variable names are stored in a character vector