To Read Column Names and Metadata from Feather Files in R Arrow
To read column names and metadata from a feather file, one needs to install and load the arrow and feather packages, which can be done by following the steps mentioned below:
- Installing the required packages
install.packages("arrow") install.packages("feather")
- Loading the packages in R
library(arrow) library(feather)
Here’s an example of how to read column names and metadata from a feather file in the R arrow:
R
# installing the requied packages install.packages ( "arrow" ) install.packages ( "feather" ) # loading the requied packages library (arrow) library (feather) # Write the mtcars dataset to a feather file write_feather (mtcars, "mtcars.feather" ) # Read the feather file and extract column names and metadata df <- read_feather ( "mtcars.feather" ) colnames <- names (df) metadata <- feather_metadata ( "mtcars.feather" ) # Print column names and metadata print (colnames) print (metadata) |
First, we will convert R’s built-in dataset “mtcars” into a feather file ‘mtcars.feather’ by using the write_feather() function of the arrow package. Then we read the feather file using the read_feather() function. The names() function in R is used to get the name of the columns. Then we used the feather package’s feather_metadata() function to read the metadata of the file.
Output:
How to read column names and metadata from feather files in R arrow?
To access column names and metadata from feather files in R programming, we use the R Arrow package to load the feather file into a data frame. After loading the feather file, we can retrieve the column names and metadata attributes by using the Feather package.
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