Plotly

Examples of visualizing plotly plots in Viser.

import time

import numpy as np
import plotly.express as px
import plotly.graph_objects as go
from PIL import Image

import viser


def create_sinusoidal_wave(t: float) -> go.Figure:
    """Create a sinusoidal wave plot, starting at time t."""
    x_data = np.linspace(t, t + 6 * np.pi, 50)
    y_data = np.sin(x_data) * 10

    fig = px.line(
        x=list(x_data),
        y=list(y_data),
        labels={"x": "x", "y": "sin(x)"},
        title="Sinusoidal Wave",
    )

    # this sets the margins to be tight around the title.
    fig.layout.title.automargin = True  # type: ignore
    fig.update_layout(
        margin=dict(l=20, r=20, t=20, b=20),
    )  # Reduce plot margins.

    return fig


def main() -> None:
    server = viser.ViserServer()

    # Plot type 1: Line plot.
    line_plot_time = 0.0
    line_plot = server.gui.add_plotly(figure=create_sinusoidal_wave(line_plot_time))

    # Plot type 2: Image plot.
    fig = px.imshow(Image.open("assets/Cal_logo.png"))
    fig.update_layout(
        margin=dict(l=20, r=20, t=20, b=20),
    )
    server.gui.add_plotly(figure=fig, aspect=1.0)

    # Plot type 3: 3D Scatter plot.
    fig = px.scatter_3d(
        px.data.iris(),
        x="sepal_length",
        y="sepal_width",
        z="petal_width",
        color="species",
    )
    fig.update_layout(legend=dict(yanchor="top", y=0.99, xanchor="left", x=0.01))
    fig.update_layout(
        margin=dict(l=20, r=20, t=20, b=20),
    )
    server.gui.add_plotly(figure=fig, aspect=1.0)

    while True:
        # Update the line plot.
        line_plot_time += 0.1
        line_plot.figure = create_sinusoidal_wave(line_plot_time)

        time.sleep(0.01)


if __name__ == "__main__":
    main()