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stack

Input Stack:
expr: TimeSeriesExpr
 ⇨ Output Stack:
StyleExpr

Change the line style to be a stacked area plot. In this mode, the line will be filled as an area that stacks on top of the previous stacked line on the same axis. For positive values, areas stack upward from zero; for negative values, areas stack downward below zero. This creates a cumulative visualization where each series builds upon the previous ones, making it easy to see both individual contributions and total values.

Parameters

  • expr: A time series expression to render as a stacked area

Examples

Converting grouped series to stacked areas:

BeforeAfter
name,sps,:eq,
(,nf.cluster,),:by

name,sps,:eq,
(,nf.cluster,),:by,
:stack

Stacking with mixed positive and negative values (subtracting 5000 creates negative portions):

BeforeAfter
name,sps,:eq,
(,nf.cluster,),:by,
5e3,:sub

name,sps,:eq,
(,nf.cluster,),:by,
5e3,:sub,
:stack

This shows how positive values stack upward from zero while negative values stack downward below zero, creating separate cumulative areas above and below the zero line.

Stacking Order

Series are stacked in the order they appear in the result set. Use sorting operations before applying :stack to control the stacking order.

  • :area - Single area plot (not stacked)
  • :line - Convert back to line style
  • :by - Group data to create multiple series for stacking
  • :sort - Control the order of stacking

See Also

See the line style examples page for more information on available line styles and their use cases.