# How to Visualize Missing Data in R using a Heatmap

#### How to Visualize Missing Data in R using a Heatmap

Missing values are generally represented by NA in a data frame. Here, we will describe how to visualize missing data in R using an interactive heatmap.

Contents:

## Prerequisites

Install the heatmaply R package: install.packages("heatmaply").

## Show missing values in R

library(heatmaply)
heatmaply_na(
airquality[1:30, ],
showticklabels = c(TRUE, FALSE)
)

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