Line

Line charts connect data points with a continuous line. Use them when the direction and rate of change matter — trends over time, trajectories of multiple series, or any ordered dimension where continuity is meaningful.

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Variants

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Single series

One measure plotted against a time or ordered dimension. The simplest and most common use case.

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Multi-series

Multiple lines plotted on the same axes. Pick a dimension in the measure’s Break down by row to split it into one line per dimension value, or add more measures to plot them as separate series.

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With reference line

A reference line marks a target, threshold, or benchmark. Add one from the axis’s Axis actions menu on the Style tab.

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Line appearance

A line’s row in its axis section on the Style tab carries the controls that shape it: Line style earns its keep on a chart where color already belongs to a break-down: it tells the measures apart when their colors cannot.

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Reference lines

Add a reference line from the Axis actions menu (⋮) in any axis header on the Style tab. Set the value, label, color, line width, and line style. A labeled line also takes horizontal (start / middle / end) and vertical (above / below) placement for its text. Multiple reference lines are supported on the same axis. See Axes & series style for the full configuration reference.

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Axis behavior

Line charts use a temporal dimension axis for time dimensions — continuous, time-aware, and not constrained to the result set. For non-time dimensions, the axis is ordinal and follows the result set sort order. Gaps in the line indicate missing data points. A line is drawn against a category axis whenever the chart also draws a bar, so the two marks always agree on the same bands.

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Combining with bars

Add a second measure from the Measure actions menu on the Fields tab, set its mark to Line, and assign it to the right axis for a dual-axis layout. The chart type reads Composite once the marks differ.