Area Chart

area Fleet Growth Over Time
series Ships
x-label Year

era 1710 -> 1716 Rise (green)
era 1716 -> 1720 Decline (red)

1710: 3
1712: 5
1714: 9
1716: 14
1718: 8
1720: 4

Syntax

area Chart Title
series Series Name
x-label X Axis Label
y-label Y Axis Label

Label: value

Era Bands

Annotate named time periods with a shaded background band and label:

area Fleet Growth by Era
x-label Year

era 1710 -> 1714 Early Growth (blue)
era 1714 -> 1720 Decline (red)

1710: 3
1712: 5
1714: 9
1716: 14
1718: 8
1720: 4

Era syntax: era <start> -> <end> Label (color)

start and end must exactly match data point labels
Color is optional; omit for the palette default

Metadata Keys

Key	Description	Required
`chart`	Must be `area`	Yes
`title`	Chart title displayed above the chart	No
`series`	Name of the data series (shown in legend)	No
`x-label`	Label for the X axis	No
`y-label`	Label for the Y axis	No
`color`	Override the area fill color	No

Data Format

Each data line follows the pattern Label: value:

1710: 3
1712: 5
1714: 9