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tikzfigure

Raw TikZ

tikzfigure covers the most common TikZ operations through its Python API, but TikZ is a vast language. fig.raw(string) injects an arbitrary LaTeX/TikZ snippet directly into the generated code - giving you a full escape hatch.

A key pattern: create nodes with the Python API (to get auto-generated labels), then reference them in raw TikZ commands via {node.label}.

This tutorial covers: - basic raw insertion - flowcharts with decision diamonds - mathematical annotations and axis drawing - network graphs with curved edges - timeline visualizations

import math


from tikzfigure import TikzFigure

Basic raw insertion

Section titled “Basic raw insertion”

Pass any TikZ string to raw. Node labels created by node can be interpolated into the string.

fig = TikzFigure()


n1 = fig.node(
    (0, 0),
    shape="circle",
    color="white",
    fill="blue",
    content="Hello!",
)
n2 = fig.node(
    (5, 0),
    shape="circle",
    color="white",
    fill="red",
    content="Hi!",
)


# A raw comment
fig.raw("% --- raw TikZ below ---")


# A plain text node at a fixed coordinate
fig.raw(
    "\\node at (2.5, 1.2) {raw TikZ node};",
)


# A dashed arrow referencing the Python-created node labels
fig.raw(
    f"\\draw[->, thick, dashed] ({n2.label}) -- ({n1.label});",
)


fig.show()

Show Tikz code 
print(fig)
% --------------------------------------------- %
% Tikzfigure generated by tikzfigure v0.3.1     %
% https://github.com/max-models/tikzfigure      %
% --------------------------------------------- %
\begin{tikzpicture}
    \node[shape=circle, color=white, fill=blue] (node0) at ({0}, {0}) {Hello!};
    \node[shape=circle, color=white, fill=red] (node1) at ({5}, {0}) {Hi!};
    % --- raw TikZ below ---
    \node at (2.5, 1.2) {raw TikZ node};
    \draw[->, thick, dashed] (node1) -- (node0);
\end{tikzpicture}

Flowchart

Section titled “Flowchart”

Flowcharts need diamond decision nodes and labelled arrows - both easy with raw TikZ.

fig = TikzFigure()


start = fig.node(
    (2, 4),
    shape="ellipse",
    fill="green!30",
    content="Start",
)
process = fig.node(
    (2, 2),
    shape="rectangle",
    fill="blue!20",
    content="Process",
)
decision = fig.node(
    (2, 0),
    shape="diamond",
    fill="orange!30",
    content="Decision?",
)
yes_node = fig.node(
    (0, -2),
    shape="rectangle",
    fill="red!20",
    content="Action A",
)
no_node = fig.node(
    (4, -2),
    shape="rectangle",
    fill="green!20",
    content="Action B",
)
end = fig.node(
    (2, -4),
    shape="ellipse",
    fill="red!30",
    content="End",
)


fig.raw(
    f"\\draw[->, thick] ({start.label})    -- ({process.label});",
)
fig.raw(
    f"\\draw[->, thick] ({process.label})  -- ({decision.label});",
)
fig.raw(
    f"\\draw[->, thick] ({decision.label}) -- node[left]  {{Yes}} ({yes_node.label});",
)
fig.raw(
    f"\\draw[->, thick] ({decision.label}) -- node[right] {{No}}  ({no_node.label});",
)
fig.raw(
    f"\\draw[->, thick] ({yes_node.label}) -- ({end.label});",
)
fig.raw(
    f"\\draw[->, thick] ({no_node.label})  -- ({end.label});",
)


fig.show()

Show Tikz code 
print(fig)
% --------------------------------------------- %
% Tikzfigure generated by tikzfigure v0.3.1     %
% https://github.com/max-models/tikzfigure      %
% --------------------------------------------- %
\begin{tikzpicture}
    \node[shape=ellipse, fill=green!30] (node0) at ({2}, {4}) {Start};
    \node[shape=rectangle, fill=blue!20] (node1) at ({2}, {2}) {Process};
    \node[shape=diamond, fill=orange!30] (node2) at ({2}, {0}) {Decision?};
    \node[shape=rectangle, fill=red!20] (node3) at ({0}, {-2}) {Action A};
    \node[shape=rectangle, fill=green!20] (node4) at ({4}, {-2}) {Action B};
    \node[shape=ellipse, fill=red!30] (node5) at ({2}, {-4}) {End};
    \draw[->, thick] (node0)    -- (node1);
    \draw[->, thick] (node1)  -- (node2);
    \draw[->, thick] (node2) -- node[left]  {Yes} (node3);
    \draw[->, thick] (node2) -- node[right] {No}  (node4);
    \draw[->, thick] (node3) -- (node5);
    \draw[->, thick] (node4)  -- (node5);
\end{tikzpicture}

Mathematical annotations and coordinate axes

Section titled “Mathematical annotations and coordinate axes”

Raw TikZ handles axis arrows, tick marks, parabolas, and LaTeX math ($...$) naturally.

fig = TikzFigure()


p1 = fig.node((0, 0), content="")
p2 = fig.node((3, 2), content="")
p3 = fig.node((6, 0), content="")


fig.raw(
    f"\\draw[thick, blue] ({p1.label}) parabola bend ({p2.label}) ({p3.label});",
)
fig.raw(
    f"\\draw[->, dashed, red] ({p1.label}) -- ({p2.label}) node[midway, left=40pt] {{$\\Delta y$}};",
)
fig.raw(
    f"\\draw[->, dashed, green!50!black] ({p1.label}) -- ({p3.label}) node[midway, below=10pt] {{$\\Delta x$}};",
)
fig.raw(
    "\\node at (3, 3) {$y = ax^2 + bx + c$};",
)


fig.raw(
    "\\draw[->, thick] (-1, 0) -- (7, 0) node[right] {$x$};",
)
fig.raw(
    "\\draw[->, thick] (0, -1) -- (0, 3.5) node[above] {$y$};",
)


for i in range(1, 7):
    fig.raw(
        f"\\draw ({i}, -0.1) -- ({i}, 0.1) node[below=3pt] {{\\small {i}}};",
    )


fig.show()

Show Tikz code 
print(fig)
% --------------------------------------------- %
% Tikzfigure generated by tikzfigure v0.3.1     %
% https://github.com/max-models/tikzfigure      %
% --------------------------------------------- %
\begin{tikzpicture}
    \node (node0) at ({0}, {0}) {};
    \node (node1) at ({3}, {2}) {};
    \node (node2) at ({6}, {0}) {};
    \draw[thick, blue] (node0) parabola bend (node1) (node2);
    \draw[->, dashed, red] (node0) -- (node1) node[midway, left=40pt] {$\Delta y$};
    \draw[->, dashed, green!50!black] (node0) -- (node2) node[midway, below=10pt] {$\Delta x$};
    \node at (3, 3) {$y = ax^2 + bx + c$};
    \draw[->, thick] (-1, 0) -- (7, 0) node[right] {$x$};
    \draw[->, thick] (0, -1) -- (0, 3.5) node[above] {$y$};
    \draw (1, -0.1) -- (1, 0.1) node[below=3pt] {\small 1};
    \draw (2, -0.1) -- (2, 0.1) node[below=3pt] {\small 2};
    \draw (3, -0.1) -- (3, 0.1) node[below=3pt] {\small 3};
    \draw (4, -0.1) -- (4, 0.1) node[below=3pt] {\small 4};
    \draw (5, -0.1) -- (5, 0.1) node[below=3pt] {\small 5};
    \draw (6, -0.1) -- (6, 0.1) node[below=3pt] {\small 6};
\end{tikzpicture}

Network graph with curved edges

Section titled “Network graph with curved edges”

Nodes placed in a ring with bend left edges and some cross-connections.

fig = TikzFigure()


n = 6
R = 3
nodes = []
for i in range(n):
    angle = 360 / n * i
    x = R * math.cos(math.radians(angle))
    y = R * math.sin(math.radians(angle))
    nodes.append(
        fig.node(
            x,
            y,
            shape="circle",
            fill="cyan!40",
            content=f"N{i}",
        ),
    )


# Ring
for i in range(n):
    j = (i + 1) % n
    fig.raw(
        f"\\draw[->, thick, bend left=15] ({nodes[i].label}) edge ({nodes[j].label});",
    )


# Cross-connections
fig.raw(
    f"\\draw[->, red,              thick, dashed, bend right=30] ({nodes[0].label}) edge ({nodes[3].label});",
)
fig.raw(
    f"\\draw[->, blue,             thick, dotted, bend left=30]  ({nodes[1].label}) edge ({nodes[4].label});",
)
fig.raw(
    f"\\draw[->, green!60!black,   thick,         bend right=30] ({nodes[2].label}) edge ({nodes[5].label});",
)


fig.raw(
    "\\node[font=\\Large\\bfseries] at (0, 4.5) {Network Graph};",
)


fig.show()

Show Tikz code 
print(fig)
% --------------------------------------------- %
% Tikzfigure generated by tikzfigure v0.3.1     %
% https://github.com/max-models/tikzfigure      %
% --------------------------------------------- %
\begin{tikzpicture}
    \node[shape=circle, fill=cyan!40] (node0) at ({3.0}, {0.0}) {N0};
    \node[shape=circle, fill=cyan!40] (node1) at ({1.5000000000000004}, {2.598076211353316}) {N1};
    \node[shape=circle, fill=cyan!40] (node2) at ({-1.4999999999999993}, {2.598076211353316}) {N2};
    \node[shape=circle, fill=cyan!40] (node3) at ({-3.0}, {3.6739403974420594e-16}) {N3};
    \node[shape=circle, fill=cyan!40] (node4) at ({-1.5000000000000013}, {-2.598076211353315}) {N4};
    \node[shape=circle, fill=cyan!40] (node5) at ({1.5000000000000004}, {-2.598076211353316}) {N5};
    \draw[->, thick, bend left=15] (node0) edge (node1);
    \draw[->, thick, bend left=15] (node1) edge (node2);
    \draw[->, thick, bend left=15] (node2) edge (node3);
    \draw[->, thick, bend left=15] (node3) edge (node4);
    \draw[->, thick, bend left=15] (node4) edge (node5);
    \draw[->, thick, bend left=15] (node5) edge (node0);
    \draw[->, red,              thick, dashed, bend right=30] (node0) edge (node3);
    \draw[->, blue,             thick, dotted, bend left=30]  (node1) edge (node4);
    \draw[->, green!60!black,   thick,         bend right=30] (node2) edge (node5);
    \node[font=\Large\bfseries] at (0, 4.5) {Network Graph};
\end{tikzpicture}

Timeline

Section titled “Timeline”

A horizontal timeline with event markers, year labels, and bracket annotations.

fig = TikzFigure()


events = [
    (0, "2020", "Project Start", "blue!30"),
    (2, "2021", "Alpha Release", "green!30"),
    (4, "2022", "Beta Release", "yellow!40"),
    (6, "2023", "v1.0", "orange!40"),
    (8, "2024", "v2.0", "red!30"),
]


fig.raw(
    "\\draw[->, ultra thick, gray] (-0.5, 0) -- (8.5, 0) node[right] {Time};",
)


for x, year, label, color in events:
    event_node = fig.node(
        (x, 1.2),
        shape="rectangle",
        fill=color,
        content=label,
        options=["rounded corners=3pt"],
    )
    fig.raw(
        f"\\draw[thick] ({x}, 0) -- ({x}, 0.7);",
    )
    fig.raw(f"\\fill ({x}, 0) circle (0.1);")
    fig.raw(
        f"\\node[below] at ({x}, -0.3) {{\\textbf{{{year}}}}};",
    )
    fig.raw(
        f"\\draw[->, dashed] ({x}, 0.7) -- ({event_node.label});",
    )


fig.raw(
    "\\node[font=\\Large\\bfseries] at (4, 2.5) {Project Timeline};",
)
fig.raw(
    "\\draw[<->, red, thick] (0, -1) -- node[below] {4 years} (8, -1);",
)


fig.show()

Show Tikz code 
print(fig)
% --------------------------------------------- %
% Tikzfigure generated by tikzfigure v0.3.1     %
% https://github.com/max-models/tikzfigure      %
% --------------------------------------------- %
\begin{tikzpicture}
    \draw[->, ultra thick, gray] (-0.5, 0) -- (8.5, 0) node[right] {Time};
    \node[rounded corners=3pt, shape=rectangle, fill=blue!30] (node0) at ({0}, {1.2}) {Project Start};
    \draw[thick] (0, 0) -- (0, 0.7);
    \fill (0, 0) circle (0.1);
    \node[below] at (0, -0.3) {\textbf{2020}};
    \draw[->, dashed] (0, 0.7) -- (node0);
    \node[rounded corners=3pt, shape=rectangle, fill=green!30] (node1) at ({2}, {1.2}) {Alpha Release};
    \draw[thick] (2, 0) -- (2, 0.7);
    \fill (2, 0) circle (0.1);
    \node[below] at (2, -0.3) {\textbf{2021}};
    \draw[->, dashed] (2, 0.7) -- (node1);
    \node[rounded corners=3pt, shape=rectangle, fill=yellow!40] (node2) at ({4}, {1.2}) {Beta Release};
    \draw[thick] (4, 0) -- (4, 0.7);
    \fill (4, 0) circle (0.1);
    \node[below] at (4, -0.3) {\textbf{2022}};
    \draw[->, dashed] (4, 0.7) -- (node2);
    \node[rounded corners=3pt, shape=rectangle, fill=orange!40] (node3) at ({6}, {1.2}) {v1.0};
    \draw[thick] (6, 0) -- (6, 0.7);
    \fill (6, 0) circle (0.1);
    \node[below] at (6, -0.3) {\textbf{2023}};
    \draw[->, dashed] (6, 0.7) -- (node3);
    \node[rounded corners=3pt, shape=rectangle, fill=red!30] (node4) at ({8}, {1.2}) {v2.0};
    \draw[thick] (8, 0) -- (8, 0.7);
    \fill (8, 0) circle (0.1);
    \node[below] at (8, -0.3) {\textbf{2024}};
    \draw[->, dashed] (8, 0.7) -- (node4);
    \node[font=\Large\bfseries] at (4, 2.5) {Project Timeline};
    \draw[<->, red, thick] (0, -1) -- node[below] {4 years} (8, -1);
\end{tikzpicture}