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Line chart

A line chart connects data points with straight lines in order to illustrate trends or changes in continuous data series.

Comet Experiment Management - Line chart
An example of a line chart

Use the line chart in Comet to visualize a metric against another metric of interest, typically time (duration, wall time, or step).

About the Configuration Sidebar

The Configuration sidebar consists of four tabs:

  • Data: Select what to display in each axis and the type of line chart to create.

    • Line type: Choose the type of line chart bar to plot between line, area, stacked, or normalized stacked.

    • [Y-Axis, X-Axis]: Define the experiment attribute to use for each axis, including which transformations to perform on it and how much smoothing to apply as a percentage in [0, 1].

      For the Y-axis, you can choose more than one field and each field will be displayed in its own line.

      For the X-axis, you can define an aggregation between: count, sum, avg, median, mode, rms, stddev, Min value, Max value, first, and last [default is last].

      Supported transformations for both axes are: None, log scale, log_e, log_10, and moving average [default is None].

    • Outliers: Decide whether to show or ignore outliers.

  • Group: Decide whether to group the selected fields for the Y-axis by a supported experiment variable.

    Given the selected group by variable, the Grouping aggregation selector will display supported aggregations (such as mean, min, max, etc.).

    Also, you can optionally select a range between Min/Max and Std Dev.


    All selected Y-axis fields will undergo the same group-by.

  • Axis: Define min and max value for either or both X and Y axis.

  • Legend: Decide whether or not to display up to 3 legend keys in the chart.

    The selected legend keys are appended in order and separated via a "-".

    By default, the panel does not display the legend and suggests using the experiment name only.

About the Panel Preview

The panel allows you to interactively analyze the lines at each X-axis step.

When hovering on any (imaginary) vertical line rooted at an X-axis step, the panel displays the dotted vertical line and the Y-axis value for each line.

May. 17, 2024