R – compare values of data frames
Example 1: Comparing Equal Data frames
R
# R program to illustrate# all_equal function# Create three data framesdata1 <- data.frame(x1 = 1:10, x2 = LETTERS[1:10])data2 <- data.frame(x1 = 1:10, x2 = LETTERS[1:10])data3 <- data.frame(x1 = 2:12, x2 = LETTERS[1:5])# Compare equal data framesall_equal(data1, data2, check.attributes = FALSE) |
Output:
TRUE
Here in the above code, we have compared equal data frames data1 and data2, and thus the output seems to be “TRUE”.
Example 2: Comparing Unequal dataframes
R
# R program to illustrate# all_equal function# Create three data framesdata1 <- data.frame(x1 = 1:10, x2 = LETTERS[1:10])data2 <- data.frame(x1 = 1:10, x2 = LETTERS[1:10])data3 <- data.frame(x1 = 2:12, x2 = LETTERS[1:5])# Compare unequal data framesall_equal(data1, data3, check.names = FALSE) |
Output:
Rows in x but not y: 1, 2, 3, 4, 5, 6, 8, 9, 10. Rows in y but not x: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10.
Here in the above code, we compared the unequal data frames data1 and data3, so we got an error explaining what’s wrong in the code.
Comparing values of data frames in R Programming – all_equal() Function
all_equal() function in R Language is used to compare the values between dataframes.
Syntax: all_equal(target, current, check.attributes, check.names)
Parameters:
- target: object to compare
- current: object to be compared with
- check.attributes: If attributes of both be compared
- check.names: If names be compared
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