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Series mapping controls which query columns are assigned to which chart channels. This is done in the Fields tab of the chart configuration panel.

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Chart channels

ChannelDescriptionApplicable chart types
XThe horizontal axis dimension or time fieldBar, line, area, scatter, heatmap, boxplot
YThe vertical axis measureBar, line, area, scatter, boxplot
ColorCreates one series per unique value; controls stacking behaviorAll Vega-based types
SizeScales point radius by a numeric measureScatter, map
TooltipFields shown on hoverAll types
Theta (pie)The measure that determines slice sizePie

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Assigning fields

Drag a field from the Available fields list at the bottom of the Fields tab into the target channel slot. You can also drag an already-assigned field between channels. Fields can appear in more than one channel simultaneously — drag from Available fields to add a field to a second channel without removing it from the first. For example, you can assign the same dimension to both the X axis and the tooltip.

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Multiple measures on Y

To plot multiple measures as separate series, drag additional measures into the Y channel. Each measure renders as its own series, with independent color and style settings in series configuration.

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Removing a field

Drag a field out of its channel slot back to Available fields, or click the × on the field token to remove it.