Create visualizations for presentations

[nevencaplar]

Create a set of static figures illustrating nested-pandas' data model and scientific usage patterns. These should be added to the project's presentation deck to be used for the presentation to the broad astronomical community.

The goal is to have figures that convey what nested-pandas does and why it matters, so that astronomers familiar with large-scale data analysis can quickly grasp the value and consider adopting it in their workflows.

Suggested figures (some of these already avaliable at various locations):

Data Model Figures

• Nested structure diagram — visual comparison of flat vs. nested
  DataFrame layout (e.g., per-object metadata + per-observation time
  series in a single structure)
• Schema diagram — how a NestedFrame maps to a nested column,
  showing dtypes and nesting levels

Usage / Workflow Figures

• End-to-end workflow — schematic of ingesting catalog with time-series
  data, querying, and extracting results using nested-pandas API
• Code + output side-by-side — a short representative code snippet
  alongside its resulting NestedFrame output (table or diagram)

Performance / Scale Figure

• Performance comparison — benchmark plot comparing nested-pandas
  to a naive flat-table approach on a realistic astronomical dataset
  (e.g., object catalog with light curves)

Acceptance Criteria

• Each figure is self-contained and readable at conference-slide scale
  (no microscopic labels)
• Figures use consistent styling (color palette, fonts) suitable for
  a light-background slide deck
• Exported as high-resolution PNG or SVG
• Figures added to the shared Google Slides deck