Tree map frequently asked questions

Tree map frequently asked questions

What is a Tree Map?

A Tree Map in Sigma Magic is a hierarchical data visualization tool that represents data using nested rectangles. The size of each rectangle is proportional to the value it represents, making it useful for comparing multiple categories and subcategories.


Why should I use a Tree Map instead of a Pie or Bar Chart

Tree Maps are more space-efficient than pie charts and bar charts, especially when dealing with a large dataset with multiple hierarchical levels. They allow users to compare different categories and subcategories quickly.


What type of data is required for creating a Tree Map?

Sigma Magic requires categorical data for grouping (e.g., region, product category) and numerical data for values (e.g., revenue, weight, sales figures).


How do I input data for a Tree Map in Sigma Magic?
  • Import data from Excel, CSV, or manual entry.
  • Ensure that there are at least two columns:

    • One for grouping (categories)

    • One for numerical values (size of rectangles)

  • Select the appropriate dataset in Sigma Magic before generating the Tree Map.

    • How do I filter or segment data in a Tree Map?
    • Applying conditions (e.g., selecting only top 10 values).
    • Using slicers or filters within the software.
    • Customizing dataset selection before analysis.



    What insights can I gain from a Tree Map?
  • Distribution of values across categories.
  • Largest and smallest contributors within a dataset.
  • Trends and patterns using color gradients.
  • Anomalies and outliers in hierarchical data.

    • How can I interpret the values in a Tree Map?
  • Larger rectangles represent higher values.
  • Larger rectangles represent higher values.
  • Color variations  highlight differences in growth, trends, or intensity.

    • What does the hierarchy level (nesting) mean in a Tree Map?

    Hierarchy levels represent subcategories with parent category. For example, in a sales dataset:

    • Parent category: Electronics
    • Subcategories: Mobile, Laptop, TV
      Each subcategory will be nested within its parent category.

    How do I compare different Tree Maps effectively?
  • Use consistent scaling for values.
  • Maintain similar color schemes across maps.
  • Place Tree Maps side by side for better visual comparison.

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    Reference: Some of the text in this article has been generated using AI tools such as ChatGPT and edited for content and accuracy.



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