How to put margins on tables or arrays in R?, I’ll show you how to use the addmargins function in the R programming language to add margins to tables or arrays in this post.
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The addmargins function will be used in the tutorial’s two examples to annotate the margin values on table objects.
To be more specific, the instruction includes the following details:
Providing Examples of Data
The data listed below will serve as the foundation for this R tutorial.
data <- data.frame(x1 = c(LETTERS[1:3], "B", "B", "C"),x2 = letters[1:2]) data
x1 x2 1 A a 2 B b 3 C a 4 B b 5 B a 6 C b
Consider the previous table. It demonstrates how the sample data frame has two variables and six rows.
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Then, using these data, we can build a table object (a contingency table).
tab <- table(data) tab
x2 x1 a b A 1 0 B 1 2 C 1 1
Example 1:-Incorporate Sum Margins into the Contingency Table.
Addmargins() Function Utilization
I’ll show you how to add the sum of each row and column to a table’s margins using the addmargins function in Example 1.
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Take into account the R code below:
tab_sum <- addmargins(tab, FUN = sum) tab_sum
x2 x1 a b sum A 1 0 1 B 1 2 3 C 1 1 2 sum 3 3 6
As you can see, we have a row and column that contain the sum margins of our data that are annotated.
Hope you enjoyed it.
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