How do I plot multiple lines on a plot with a legend?

Create a multi-line chart with a legend using wandb.plot.line_series() and the keys argument.

Create a multi-line custom chart with wandb.plot.line_series(). Navigate to the project page to view the line chart. To add a legend, include the keys argument in wandb.plot.line_series(). For example:

with wandb.init(project="my_project") as run:

    run.log(
        {
            "my_plot": wandb.plot.line_series(
                xs=x_data, ys=y_data, keys=["metric_A", "metric_B"]
            )
        }
    )

Refer to additional details about multi-line plots here under the Multi-line tab.

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Experiments