How to Create a New Data Frame from Existing Data in R (Example Code)
This article explains how to make a data frame from an existing data set in the R programming language.
Example Data
data(iris) # Load example data frame head(iris) # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # 1 5.1 3.5 1.4 0.2 setosa # 2 4.9 3.0 1.4 0.2 setosa # 3 4.7 3.2 1.3 0.2 setosa # 4 4.6 3.1 1.5 0.2 setosa # 5 5.0 3.6 1.4 0.2 setosa # 6 5.4 3.9 1.7 0.4 setosa |
data(iris) # Load example data frame head(iris) # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # 1 5.1 3.5 1.4 0.2 setosa # 2 4.9 3.0 1.4 0.2 setosa # 3 4.7 3.2 1.3 0.2 setosa # 4 4.6 3.1 1.5 0.2 setosa # 5 5.0 3.6 1.4 0.2 setosa # 6 5.4 3.9 1.7 0.4 setosa
Example: Subset Certain Columns from Existing Data Frame
iris_subset <- iris[ , c("Sepal.Length", # Create data frame from another "Petal.Length", "Species")] head(iris_subset) # Sepal.Length Petal.Length Species # 1 5.1 1.4 setosa # 2 4.9 1.4 setosa # 3 4.7 1.3 setosa # 4 4.6 1.5 setosa # 5 5.0 1.4 setosa # 6 5.4 1.7 setosa |
iris_subset <- iris[ , c("Sepal.Length", # Create data frame from another "Petal.Length", "Species")] head(iris_subset) # Sepal.Length Petal.Length Species # 1 5.1 1.4 setosa # 2 4.9 1.4 setosa # 3 4.7 1.3 setosa # 4 4.6 1.5 setosa # 5 5.0 1.4 setosa # 6 5.4 1.7 setosa
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