Scalar represents a single scalar value that can be plotted as a time series if logged over time.

Components and APIs

Primary component: scalar

Secondary components: scalar_plot_props, colorrgba, radius, label

Python APIs: log_scalar

Rust API: Scalar

Simple Example

"""Log a scalar over time.""" import numpy as np import rerun as rr rr.init("rerun_example_scalar", spawn=True) rng = np.random.default_rng(12345) value = 1.0 for step in range(100): rr.set_time_sequence("step", step) value += rng.normal() rr.log_scalar("scalar", value)