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ls

Input Stack:
style: String
expr: TimeSeriesExpr
 ⇨ Output Stack:
StyleExpr
 

Set the line style for visualizing time series data. This operator allows you to choose between different visualization styles that control how the data is rendered on the graph. It provides a single interface for setting any of the four main line styles.

Parameters

  • expr: The time series expression to apply the line style to
  • style: The line style to use (one of: line, area, stack, vspan)

Supported Styles

line (Default)

  • Behavior: Draws a normal line connecting data points
  • Use case: Standard time series visualization
  • Equivalent: Using :line operator

area

  • Behavior: Fills the space between the line and zero on the Y-axis
  • Use case: Emphasizing magnitude and volume
  • Equivalent: Using :area operator

stack

  • Behavior: Stacks filled areas on top of previous stacked lines on the same axis
  • Use case: Showing cumulative contributions
  • Equivalent: Using :stack operator

vspan

  • Behavior: Non-zero datapoints are drawn as vertical spans covering the full graph height
  • Use case: Event visualization and condition marking
  • Equivalent: Using :vspan operator

Examples

Basic line style (default):

Line
name,sps,:eq,
:sum,
(,name,),:by,
line,:ls

Area fill visualization:

Area
name,sps,:eq,
:sum,
(,name,),:by,
area,:ls

Stacked area visualization:

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

Vertical span for events:

VSpan
name,sps,:eq,
:sum,
(,name,),:by,
200e3,:gt,
vspan,:ls

Alternative Approach

While :ls provides a unified interface, you can also use the specific style operators directly:

# These pairs are equivalent:
name,cpu,:eq,:sum,area,:ls
name,cpu,:eq,:sum,:area

name,cpu,:eq,:sum,stack,:ls
name,cpu,:eq,:sum,:stack
  • :line - Standard line style (default)
  • :area - Area fill style
  • :stack - Stacked area style
  • :vspan - Vertical span style
  • :alpha - Control line transparency
  • :lw - Control line width

See Also