Contents

  • Part I. Bad Visualization
  • Part II. Why Are They Bad?
  • Part III. Good Alternatives
  • Part IV. Why Are They Good?

Part I. Bad Visualization

Different ways population has been visualized:

Different ways population has been visualized:

Different ways population has been visualized:

Part II. Why Are They Bad?

Pie Chart

Population of Countries with Pie Chart

Problems with This Visualization

  • The large number of countries in the dataset makes it difficult to display effectively in a pie chart.
  • Countries with significantly large populations dominate the chart, leaving smaller countries nearly invisible.
  • The visualization does not allow for easy comparison of countries with similar population sizes.

Bubble Chart

Population of Countries with Bubble Chart

Problems with This Visualization

  • Some bubbles are not labeled, making it difficult to identify the countries they represent.
  • Exact population numbers are not visible; you can only make rough comparisons based on bubble size.
  • The bubble shapes and sizes are hard to make comparisons precisely.

Square Blocks

Population of Countries with Bubble Chart

Problems with This Visualization

  • Although visually creative, square blocks fail to provide any numerical data, which is crucial for understanding population sizes.
  • While square blocks are easier to compare in terms of size than bubbles, the differences in population size are still difficult to assess accurately.

Part III. Good Alternatives

Interactive Bar Chart

Interactive World Map

Part IV. Why Are They Good?

What-Why-How Analysis

1. Interactive Bar Chart

  • What

An interactive bar chart displaying population data by country. It allows users to search, filter, and compare countries or regions based on different attributes.

  • Why

To enable dynamic and engaging exploration of population data.

  • How

  • The bar chart uses the 2023 World Population Data sourced from the WDI library in R.

  • The countrycode library in R is used to categorize data by continent, making the chart more user-friendly and informative.

  • Interactive features include search functionality, sorting by population size, and hover-over tooltips displaying additional statistics.

What-Why-How Analysis

2. Interactive World Map

  • What

A dynamic map that visualizes the population data of countries across the globe.

  • Why

To provide a geographic perspective of population distribution around the world.

  • How

  • The world map is built using the same 2023 World Population Data from the WDI library.

  • By clicking or hovering over countries, users can view detailed population numbers.

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