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    • Blog
      • From Circles to Stars: Euler Diagrams with Optimized Radially Convex Boundaries
      • Treemap Variations in Python
      • How Did the Python Package Landscape Evolve in 2025? A Data-Driven Review
      • What Wikidata Knows about Python Packages
      • Making Line Plots Delightful with Optimized Direct Labeling
      • A Bird's-eye View of Python Machine Learning Packages in 2025
      • Trying to Make Sense of PyPI Download Statistics
      • A Simple Tidy Tree Layout Implementation in Python
      • Python Packages for Data Visualization in 2025
      • Setting Up the Spectalizer Website
    • Data Visualization
      • Notable persons
        • Alfred Inselberg
        • Ben Shneiderman
        • John Tukey
        • Charles Joseph Minard
        • Florence Nightingale
        • Jacques Bertin
        • Leland Wilkinson
        • Mary Eleanor Spear
        • William Playfair
      • Types of charts
        • Temporal heat map
        • Tree map
        • Node-link diagram
        • Parallel coordinates
        • Heat map
        • Area chart
        • Bar chart
        • Hexbin Plot
        • Line chart
        • Sankey diagram
        • Scatter Plot
        • Rug plot
        • Violin plot
        • Icicle plot
        • Pie chart
        • Arc diagram
        • Radial tree layout
        • Adjacency matrix
        • Box plot
        • Chord diagram
        • Contour plot
        • Donut chart
        • Euler diagram
        • Histogram
        • Mosaic plot
        • Radar chart
        • Sparkline
        • Tree node-link diagram
        • Venn diagram
        • Waterfall chart
        • Alluvial diagram
        • Cartogram
        • Chernoff faces
        • Choropleth map
        • Daytime heat map
        • Lollipop chart
        • Package diagram
        • Progress bar
        • Scree plot
        • Stem-and-leaf plot
        • Streamgraph
        • Ternary plot
        • Word cloud
        • Bubble Plot
        • Circular tree map
        • KDE plot
        • Scatter plot matrix
        • Sunburst chart
        • Voronoi tree map
      • Types of data transformations
        • Layered graph layout
        • Force-directed graph layout
        • Kernel density estimation
        • Reingold-Tilford algorithm
        • Edge bundling
        • Graph layout techniques
        • Pivoting around the hour of day
        • Time series pivoting
        • Treemap tiling algorithm
        • Slice-and-dice tiling
        • Squarified tiling
        • Strip treemap tiling
        • Sugiyama method
      • Types of datasets
        • Tree data
        • Graph data
        • Directed graph
        • Time series data
        • Univariate time series data
        • Tabular data
    • Topics
      • Mathematical Optimization for Data Visualization
    • Mathematical Optimization for Data Visualization

    Topics

    • Mathematical Optimization for Data Visualization
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