chore: import upstream snapshot with attribution

This commit is contained in:
wehub-resource-sync
2026-07-13 13:05:14 +08:00
commit 2a547be7fe
7904 changed files with 1000926 additions and 0 deletions
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<!--[metadata]
title = "Live scrolling plot"
tags = ["Plots", "Live"]
thumbnail = "https://static.rerun.io/live_scrolling_plot_thumbnail/73c6b11bd074af258b8d30092e15361e358d8069/480w.png"
thumbnail_dimensions = [480, 384]
-->
Visualize a live stream of several plots, scrolling horizontally to keep a fixed window of data.
<picture>
<img src="https://static.rerun.io/live_scrolling_plot/9c9a9b3a4dd1d5e858ba58489f686b5d481cfb2e/full.png" alt="">
<source media="(max-width: 480px)" srcset="https://static.rerun.io/live_scrolling_plot/9c9a9b3a4dd1d5e858ba58489f686b5d481cfb2e/480w.png">
<source media="(max-width: 768px)" srcset="https://static.rerun.io/live_scrolling_plot/9c9a9b3a4dd1d5e858ba58489f686b5d481cfb2e/768w.png">
<source media="(max-width: 1024px)" srcset="https://static.rerun.io/live_scrolling_plot/9c9a9b3a4dd1d5e858ba58489f686b5d481cfb2e/1024w.png">
<source media="(max-width: 1200px)" srcset="https://static.rerun.io/live_scrolling_plot/9c9a9b3a4dd1d5e858ba58489f686b5d481cfb2e/1200w.png">
</picture>
## Used Rerun types
[`Scalars`](https://www.rerun.io/docs/reference/types/archetypes/scalars)
## Setting up the blueprint
In order to only show a fixed window of data, this example creates a blueprint that uses
the `time_ranges` parameter of the `TimeSeriesView` blueprint type.
We dynamically create a `TimeSeriesView` for each plot we want to show, so that we can
set the `time_ranges`. The start of the visible time range is set to the current time
minus the window size, and the end is set to the current time.
```python
rr.send_blueprint(
rrb.Grid(
contents=[
rrb.TimeSeriesView(
origin=plot_path,
time_ranges=[
rrb.VisibleTimeRange(
"time",
start=rrb.TimeRangeBoundary.cursor_relative(seconds=-args.window_size),
end=rrb.TimeRangeBoundary.cursor_relative(),
)
],
plot_legend=rrb.PlotLegend(visible=False),
)
for plot_path in plot_paths
]
),
)
```
## Run the code
To run this example, make sure you have the Rerun repository checked out and the latest SDK installed:
```bash
# Setup
pip install --upgrade rerun-sdk # install the latest Rerun SDK
git clone git@github.com:rerun-io/rerun.git # Clone the repository
cd rerun
git checkout latest # Check out the commit matching the latest SDK release
```
Install the necessary libraries specified in the requirements file:
```bash
pip install -e examples/python/live_scrolling_plot
```
Then, simply execute the main Python script:
```bash
python -m live_scrolling_plot
```
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#!/usr/bin/env python3
"""Show several live plots of random walk data using a scrolling fixed window size."""
from __future__ import annotations
import argparse
import time
from typing import TYPE_CHECKING
import numpy as np
import rerun as rr # pip install rerun-sdk
import rerun.blueprint as rrb
if TYPE_CHECKING:
from collections.abc import Iterator
def random_walk_generator() -> Iterator[float]:
value = 0.0
while True:
value += np.random.normal()
yield value
def main() -> None:
parser = argparse.ArgumentParser(description="Plot dashboard stress test")
rr.script_add_args(parser)
parser.add_argument("--num-plots", type=int, default=6, help="How many different plots?")
parser.add_argument("--num-series-per-plot", type=int, default=5, help="How many series in each single plot?")
parser.add_argument("--freq", type=float, default=100, help="Frequency of logging (applies to all series)")
parser.add_argument("--window-size", type=float, default=5.0, help="Size of the window in seconds")
parser.add_argument("--duration", type=float, default=60, help="How long to log for in seconds")
args = parser.parse_args()
plot_paths = [f"plot_{i}" for i in range(args.num_plots)]
series_paths = [f"series_{i}" for i in range(args.num_series_per_plot)]
rr.script_setup(args, "rerun_example_live_scrolling_plot")
# Always send the blueprint since it is a function of the data.
rr.send_blueprint(
rrb.Grid(
contents=[
rrb.TimeSeriesView(
origin=plot_path,
time_ranges=[
rrb.VisibleTimeRange(
"time",
start=rrb.TimeRangeBoundary.cursor_relative(seconds=-args.window_size),
end=rrb.TimeRangeBoundary.cursor_relative(),
),
],
plot_legend=rrb.PlotLegend(visible=False),
)
for plot_path in plot_paths
],
),
)
# Generate a list of generators for each series in each plot
values = [[random_walk_generator() for _ in range(args.num_series_per_plot)] for _ in range(args.num_plots)]
cur_time = time.time()
end_time = cur_time + args.duration
time_per_tick = 1.0 / args.freq
while cur_time < end_time:
# Advance time and sleep if necessary
cur_time += time_per_tick
sleep_for = cur_time - time.time()
if sleep_for > 0:
time.sleep(sleep_for)
if sleep_for < -0.1:
print(f"Warning: missed logging window by {-sleep_for:.2f} seconds")
rr.set_time("time", timestamp=cur_time)
# Output each series based on its generator
for plot_idx, plot_path in enumerate(plot_paths):
for series_idx, series_path in enumerate(series_paths):
rr.log(f"{plot_path}/{series_path}", rr.Scalars(next(values[plot_idx][series_idx])))
rr.script_teardown(args)
if __name__ == "__main__":
main()
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[project]
name = "live_scrolling_plot"
version = "0.1.0"
readme = "README.md"
dependencies = ["numpy", "rerun-sdk"]
[project.scripts]
live_scrolling_plot = "live_scrolling_plot:main"
[build-system]
requires = ["hatchling"]
build-backend = "hatchling.build"