Reshape Array to Data Frame in R (Example Code)

This article demonstrates how to reshape an array object to a data frame in the R programming language.

Creation of Example Data

x <- array(11:22, dim = c(3, 2, 2))    # Construct example array
x
# , , 1
# 
#      [,1] [,2]
# [1,]   11   14
# [2,]   12   15
# [3,]   13   16
# 
# , , 2
# 
#      [,1] [,2]
# [1,]   17   20
# [2,]   18   21
# [3,]   19   22

Example: Converting an Array to a Data Frame

df <- as.data.frame.table(x)           # Switch from array to data frame class
df
#    Var1 Var2 Var3 Freq
# 1     A    A    A   11
# 2     B    A    A   12
# 3     C    A    A   13
# 4     A    B    A   14
# 5     B    B    A   15
# 6     C    B    A   16
# 7     A    A    B   17
# 8     B    A    B   18
# 9     C    A    B   19
# 10    A    B    B   20
# 11    B    B    B   21
# 12    C    B    B   22

Further Resources & Related Articles

Below, you may find some additional resources on topics such as time objects, matrices, and data conversion:

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