Replace Inf Values with NA in R, you can substitute NA values for Inf values using the techniques listed below:
Method 1: Replace Inf with NA in Vector
x[is.infinite(x)] <- NA
Example 1: Substitute NA for Inf in the Vector
The code below demonstrates how to swap out all Inf values in a vector for NA values.
x <- c(14, 102, Inf, 8, Inf, 9, 12, 3, 202, Inf)
x[is.infinite(x)] <- NA
x
[1] 14 102 NA 8 NA 9 12 3 202 NA
You’ll see that the original vector’s Inf values have all been swapped out for NA values.
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Method 2: Replace Inf with NA in All Columns of the Data Frame
df[sapply(df, is.infinite)] <- NA
Example 2: Change all columns in the data frame from Inf to NA
In every column of a data frame, Inf values can be changed to NA values using the code below:
Let’s create a data frame
df <- data.frame(x=c(14, 15, 25, 34, Inf, 18, Inf), y=c(10, Inf, Inf, 43, 45, 55, 88), z=c(Inf, 55, 45, 65, 35, 102, 14)) df
x y z 1 14 10 Inf 2 15 Inf 55 3 25 Inf 45 4 34 43 65 5 Inf 45 35 6 18 55 102 7 Inf 88 14
Now we can replace Inf values with NA values in all columns
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df[sapply(df, is.infinite)] <- NA df
x y z 1 14 10 NA 2 15 NA 55 3 25 NA 45 4 34 43 65 5 NA 45 35 6 18 55 102 7 NA 88 14
Observe that NA values have been substituted for the Inf values in each column of the data frame.
Method 3: Replace Inf with NA in Specific Columns of the Data Frame
df[c('col1', 'col2')][sapply(df[c('col1', 'col2')], is.infinite)] <- NA
Example 3: In certain columns of a data frame, replace Inf with NA
The code below demonstrates how to change Inf values in particular columns of a data frame to NA values.
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Now let’s create a data frame
df <- data.frame(x=c(44, 55, 15, 34, Inf, 88, Inf), y=c(110, Inf, Inf, 33, 55, 58, 88), z=c(Inf, 75, 85, 6, 33, 12, 114)) df
x y z 1 44 110 Inf 2 55 Inf 75 3 15 Inf 85 4 34 33 6 5 Inf 55 33 6 88 58 12 7 Inf 88 114
Now replace Inf values with NA values in columns ‘x’ and ‘z’ only
df[c('x', 'z')][sapply(df[c('x', 'z')], is.infinite)] <- NA
df
x y z 1 44 110 NA 2 55 Inf 75 3 15 Inf 85 4 34 33 6 5 NA 55 33 6 88 58 12 7 NA 88 114
The NA values have been substituted for the Inf values in the ‘x’ and ‘y’ columns, as you can see.
The Inf values in column ‘y’ have not changed, nevertheless.
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