Removing 'Inf' values in R dataframe | Data cleaning in R
What are 'Inf' values in R dataframes?
'Inf' or infinity values are a special type of numeric value in R that represent positive or negative infinity. They can occur in dataframes when performing mathematical operations like division by zero or logarithmic functions on zero or negative values.
Why remove 'Inf' values in R dataframes?
Although 'Inf' values may not affect the outcome of some calculations, they can lead to errors in statistical analysis or machine learning models. It is important to remove them before proceeding with data analysis.
How to remove 'Inf' values in R dataframes?
The following code snippet shows how to remove 'Inf' values from a dataframe named 'df':
df[!is.infinite(df)] # removes all 'Inf' values in df
This code uses the 'is.infinite()' function to identify the 'Inf' values in the dataframe and the negation operator '!' to select all non-'Inf' values. The resulting dataframe will have all 'Inf' values removed.
Alternatively, you can replace 'Inf' values with a more appropriate value like 'NA' (missing value) using the 'replace()' function:
df[df == Inf] <- NA # replaces all 'Inf' values with 'NA'
Now that you know how to remove 'Inf' values from dataframes in R, you can clean your data and perform accurate analyses.