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Graph drawing primer — professional network diagrams from scratch

2026-03-06

Learn graph basics, draw networks in DrawFig, export TikZ for LaTeX, and follow layout and styling best practices.

Graph drawing primer — professional network diagrams from scratch

Published: 2026-03-06 Category: Tutorial Tags: graph drawing, network diagrams, LaTeX, TikZ, research figures

Introduction

Graphs underpin CS, discrete math, and network science — social graphs, neural sketches, knowledge graphs, and algorithm visualisations all start from the same primitives. This tutorial walks through DrawFig for publication-quality graphs and TikZ export for LaTeX papers.

1 — Graph basics

What is a graph?

  • Vertices (nodes): entities
  • Edges: relationships (line segments or curves)
  • Directed graph: arrows show direction
  • Undirected graph: symmetric ties
  • Weights: numeric labels on edges (distance, cost, …)

Common families

  1. Simple graph — no loops, no multi-edges
  2. Complete graph — every pair adjacent
  3. Bipartite graph — two colour classes, edges only across
  4. Tree — connected, acyclic
  5. DAG — directed, acyclic

2 — Drawing in DrawFig

Step 1 — Open the editor

Visit https://drawfig.com and launch the editor.

Step 2 — Add vertices

  1. Open the Graph / shape palette (product UI may label sections differently)
  2. Drag circular (or custom) vertices
  3. Duplicate (Ctrl+D) and arrange
  4. Optional: run an auto-layout helper if available
Tips - Multi-select with Shift - Use align / distribute tools

Step 3 — Add edges

  1. Pick the edge / connector tool
  2. Drag from one vertex to another
  3. Choose straight, orthogonal, curved, or directed variants
Tips - Enable snapping so connectors meet vertex anchors - Double-click an edge to add labels (e.g. weights) - Right-click for stroke colour, width, dash patterns

Step 4 — Styling

  1. Vertices: colour by role, resize focal nodes, emphasise borders
  2. Edges: colour by relation type, thickness ∝ importance, arrowheads for direction
  3. Labels: math mode where appropriate ($v_1$ style)

3 — Worked ideas

Idea A — Social tie diagram

Five people A…E, undirected edges for “knows”, thickness for tie strength, colour clusters for communities.

Idea B — Shortest-path intuition

Vertices as graph nodes, directed weighted edges, colour to show visited frontier, arrows for relax order.

Idea C — Knowledge graph sketch

Rectangles for concepts, directed typed edges (“is-a”, “part-of”), layered layout for readability.

4 — Exporting TikZ

DrawFig can emit TikZ you paste into LaTeX.

Export flow

  1. Finish the figure on canvas
  2. Menu: Export → TikZ (wording may vary slightly by build)
  3. Copy the generated code

Minimal LaTeX wrapper

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{graphs, graphdrawing}
\usegdlibrary{force, trees}

\begin{document}

\section{Example graph}

\begin{tikzpicture}
  \node (v1) at (0,0) {$v_1$};
  \node (v2) at (2,0) {$v_2$};
  \draw (v1) -- (v2);
\end{tikzpicture}

\end{document}

Tweaks after export

\node[draw, circle, fill=blue!20, minimum size=1cm] (v1) at (0,0) {$v_1$};
\draw[->, thick, red] (v1) -- node[above] {$w{=}5$} (v2);

5 — Best practices

Layout

  • Minimise crossings, prefer symmetric skeletons
  • Layer DAGs top-down
  • Keep comfortable spacing between nodes

Colour

  • Consistent palette per role
  • Enough contrast; avoid relying on red–green alone
  • Keep legend count small (≤5 swatches is a good target)

Labels

  • Prefer proper math fonts for variables
  • Keep text short; place labels outside crowded regions

Export targets

  • Print / papers: PDF or SVG; ≥300 DPI for raster
  • Slides: PNG/SVG
  • LaTeX: TikZ whenever you need infinite zoom / journal compatibility

6 — FAQ

Q: Huge graphs (>50 vertices)? A: Use auto-layout, draw in layers, or consider programmatic generation (NetworkX → TikZ). Q: Weighted edges? A: Label edges (w=5), vary thickness or colour ramps. Q: TikZ compile errors? A: Load required TikZ libraries, test on TeX Live / Overleaf, consult DrawFig docs for dialect notes. Q: Animation? A: Not inside DrawFig itself — export frames or use LaTeX animate, Matplotlib, etc.

7 — Power tips

Templates

Explore built-in tree, ring, grid, and layered starters when available.

Batch edits

Shift multi-select → move / restyle together; Ctrl+G / Ctrl+Shift+G for grouping.

Shortcuts (typical draw.io bindings)

  • Ctrl+D duplicate
  • Ctrl+Z undo
  • Delete remove selection

Interop

  • LaTeX: TikZ export
  • Python: JSON / graph interchange where supported
  • Gephi: GEXF when exporters exist
  • Slides: SVG/PNG

8 — Practice prompts

Beginner 1. Draw K_5 (complete graph on 5 vertices) 2. Binary tree, depth 3 3. Small DAG with 6 vertices Intermediate 1. 10-person social graph with tie strengths 2. Prerequisite graph for courses 3. Toy city grid network Advanced 1. Compact neural-net block diagram 2. Domain mini knowledge graph 3. Multi-frame storyboard for an algorithm (export separate pages)

9 — Further reading

Books

  • Introduction to Graph Theory — West
  • Graph Theory with Applications — Bondy & Murty
  • Discrete mathematics textbooks — graph chapters

TikZ

Tools

  • DrawFig — https://drawfig.com
  • Graphviz, NetworkX, Gephi — automation & analytics companions

10 — Summary

You now have a checklist for: - Core graph vocabulary - Building diagrams in DrawFig - Exporting TikZ for LaTeX - Layout, colour, and label hygiene - Common troubleshooting paths Next actions 1. Reproduce one practice graph end-to-end 2. Export TikZ and compile a one-page TeX example 3. Drop the figure into a real paper or slide deck Start drawing: https://drawfig.com
Related - 📖 DrawFig vs FigDraw vs BioRender - 📖 Network diagram guide - 📖 User story — faster research team workflows Questions? Comment on the article or email support@drawfig.com
Last updated: 2026-03-06 · DrawFig Team