R programming tutorial: Creating Nested Pie Charts using plotly in R

• Data visualization usi...
With plotly package in R, a nested pie chart can be realized with plotting a piechart with a hole (also called a Donut chart) first , then plot a second pie chart to the hole position. So two categorical variables will be shown in a combined nested pie chart.
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#rstudio
#piechart
#donutchart
#nested
#datavisualization
#plotly
#ggplot2
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