Entering Data

To enter data as a data frame in the R Language, we use the data.frame() function. The data.frame() function creates data frames that are tightly coupled collections of variables. These data frames are widely used as the fundamental data structure in the R Language. A single data frame can contain different vectors of different classes together thus it becomes one data structure for all the needs.

Syntax:

data_frame <- data.frame( column_name1 = vector1, column_name2 = vector2 )

where,

• column_name1, column_name2: determines the name for columns in data frame
• vector1, vector2: determines the data vector that contain data values for data frame columns.

Example: Basic data frame that contains one numeric vector and one character vector.

R

# create data frame
data_frame <- data.frame( id = c(1,2,3),
                          name = c("geeks", "for", 
                                   "geeks") )
  
# print dataframe, summary and its class 
print("Data Frame:")
data_frame
print("Class:")
class(data_frame)
print("Summary:")
summary(data_frame)

Output:

Data Frame:
 id  name
1  1 geeks
2  2   for
3  3 geeks
Class:
"data.frame"
Summary:
      id          name          
Min.   :1.0   Length:3          
1st Qu.:1.5   Class :character  
Median :2.0   Mode  :character  
Mean   :2.0                      
3rd Qu.:2.5                      
Max.   :3.0