Check if Column Exists in Data Frame in R (Example) | Find Variable Name in Data Table or Matrix

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Get Column Names of Data Frame in R (2 Examples) | Variable in Matrix | colnames & names Functions

hasName Function in R (Example) | Apply to Data Frame Column | Check if Variable Name is Contained

R Create Data Frame where a Column is a List (Example) | Different Variable Types | data.frame & I()

List All Column Names But One in R (2 Examples) | Remove Certain Variable in Data Frame | colnames()

Convert Values in Column into Row Names of Data Frame in R (Example) | Variable & row.names Function

Add Prefix to Column Names in R (Example) | Affix Before Variable of Data Frame | paste0() Function

Change Row Names of Data Frame or Matrix in R (4 Examples) | row.names, data.frame & matrix Function

Convert Data Frame Columns to List Elements in R (2 Examples) | Adapt One / Each Variable | colnames