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Often, especially when asking questions on Stack Overflow, I would like to create a data table with dummy values. However, I'm not sure how to create a data table which is either empty or has dummy values. How do I do this?
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function clear() Simply remove all rows of data from the table.
An empty data frame can also be created with or without specifying the column names and column types to the data values contained within it. data. frame() method can be used to create a data frame, and we can assign the column with the empty vectors.
We can create a table by using as. table() function, first we create a table using matrix and then assign it to this method to get the table format. Example: In this example, we will create a matrix and assign it to a table in the R language.
To make an empty data table, use:
DT <- data.table(
variable1 = integer(),
variable2 = character(),
variable3 = numeric()
)
To make a data table with fake data, use:
DT <- data.table(
variable1 = 1:5,
variable2 = c(1,2,5,6,8),
variable3 = c("a","b","c","d","e")
)
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