A data frame is a matrix-like structure to store data tables. It is a list of vectors of equal length whose columns can be of differing data types
Problem:
Create a Data Frame in R
Solution:
A data frame has the variables of a data set as columns and the observations as rows. Now we can create three vectors as below:
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A character vector
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A numeric vector
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A logical vector
Then, will combine the three vectors into a data frame using the following code:
| a <- c(1,2,3) | |
| b <- c("a","b","c") | |
| c <- c(TRUE,FALSE,FALSE) | |
| df <- data.frame(a,b,c) | |
| print(df) |
by 
While working with Data Frames, we may need to work with an extremely large data set. For example, we can use the built-in data frame mtcars.
| mtcars | |
| head(mtcars) | |
| tail(mtcars) | |
| str(mtcars) |
If the dataset is huge, we may see only a part of the data in the console. we can use the below functions for better understanding.
head(): shows the first observations of a data frame.
tail(): prints out the last observations in your data set.
str(): shows you the structure of your data set
| mtcars | |
| head(mtcars) | |
| tail(mtcars) | |
| str(mtcars) |
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Thank You For Reading!
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