wehub-resource-sync
69 lines
2.6 KiB
Markdown
69 lines
2.6 KiB
Markdown
<!--[metadata]
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title = "Live scrolling plot"
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tags = ["Plots", "Live"]
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thumbnail = "https://static.rerun.io/live_scrolling_plot_thumbnail/73c6b11bd074af258b8d30092e15361e358d8069/480w.png"
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thumbnail_dimensions = [480, 384]
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-->
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Visualize a live stream of several plots, scrolling horizontally to keep a fixed window of data.
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<picture>
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<img src="https://static.rerun.io/live_scrolling_plot/9c9a9b3a4dd1d5e858ba58489f686b5d481cfb2e/full.png" alt="">
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<source media="(max-width: 480px)" srcset="https://static.rerun.io/live_scrolling_plot/9c9a9b3a4dd1d5e858ba58489f686b5d481cfb2e/480w.png">
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<source media="(max-width: 768px)" srcset="https://static.rerun.io/live_scrolling_plot/9c9a9b3a4dd1d5e858ba58489f686b5d481cfb2e/768w.png">
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<source media="(max-width: 1024px)" srcset="https://static.rerun.io/live_scrolling_plot/9c9a9b3a4dd1d5e858ba58489f686b5d481cfb2e/1024w.png">
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<source media="(max-width: 1200px)" srcset="https://static.rerun.io/live_scrolling_plot/9c9a9b3a4dd1d5e858ba58489f686b5d481cfb2e/1200w.png">
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</picture>
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## Used Rerun types
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[`Scalars`](https://www.rerun.io/docs/reference/types/archetypes/scalars)
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## Setting up the blueprint
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In order to only show a fixed window of data, this example creates a blueprint that uses
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the `time_ranges` parameter of the `TimeSeriesView` blueprint type.
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We dynamically create a `TimeSeriesView` for each plot we want to show, so that we can
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set the `time_ranges`. The start of the visible time range is set to the current time
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minus the window size, and the end is set to the current time.
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```python
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rr.send_blueprint(
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rrb.Grid(
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contents=[
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rrb.TimeSeriesView(
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origin=plot_path,
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time_ranges=[
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rrb.VisibleTimeRange(
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"time",
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start=rrb.TimeRangeBoundary.cursor_relative(seconds=-args.window_size),
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end=rrb.TimeRangeBoundary.cursor_relative(),
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)
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],
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plot_legend=rrb.PlotLegend(visible=False),
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)
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for plot_path in plot_paths
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]
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),
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)
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```
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## Run the code
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To run this example, make sure you have the Rerun repository checked out and the latest SDK installed:
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```bash
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# Setup
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pip install --upgrade rerun-sdk # install the latest Rerun SDK
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git clone git@github.com:rerun-io/rerun.git # Clone the repository
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cd rerun
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git checkout latest # Check out the commit matching the latest SDK release
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```
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Install the necessary libraries specified in the requirements file:
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```bash
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pip install -e examples/python/live_scrolling_plot
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```
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Then, simply execute the main Python script:
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```bash
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python -m live_scrolling_plot
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```
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