Modern R Programming Cookbook

How to do it…

The object conversion in R is very intuitive and easy to understand. The name of the function itself tells the story. Let's perform the following steps to convert a matrix to a data frame and a data frame to a matrix:

1. To convert a matrix to a data frame, the as.data.frame() function is enough:

        M1ToData <- as.data.frame(M1)

2. To check whether the newly created object M1ToData is a data frame or not, you can use either the class() function or the str() function. The str() function will give the results along with the type of each column. The output of the str() function is as follows:

        > str(M1ToData)        'data.frame':       3 obs. of  3 variables:         $ V1: int  1 4 7         $ V2: int  2 5 8         $ V3: int  3 6 9

3. Notice that the columns got new names ...