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v2.2

Polar Sector

Polar Sector is a highlighter component that lives under Polar Chart. It can be used to highlight sectors in the polar coordinate system, specified by four values:

  • start angle
  • end angle
  • start amplitude
  • end amplitude
Polar SectorPolar Sector

Adding a Sector​

sector = chart.add_sector()

Configuring the Sector​

# Limit between 3 and 7 units of amplitude
sector.set_amplitude_start(3).set_amplitude_end(7)

# Span angles 30°–120°
sector.set_angle_start(30).set_angle_end(120)

Fill Coloring​

# Solid color fill:
sector.set_color('#FF0000')

# Remove any fill style:
sector.set_empty_color_fill()

# Per-value palette lookup:
sector.set_palette_coloring(
    steps=[
        {'value':  0, 'color': '#ADD8E6'},
        {'value': 1, 'color': '#00008B'},
    ],
    look_up_property='x',
    interpolate=True,
    percentage_values=True,
)

# With formatted legend display:
sector.set_palette_coloring(
    steps=[
        {'value': 0, 'color': '#0000FF'},
        {'value': 100, 'color': '#FF0000'},
    ],
    look_up_property='value',
    formatter_precision=2,           # Decimal places
    formatter_unit='mag',             # Unit suffix
    formatter_scale=1.5,              # Scale values
    formatter_type='scientific',      # 'standard', 'compact', 'engineering', 'scientific'
    formatter_operation='floor',      # 'none', 'round', 'ceil', 'floor'
)
Polar Sector Dynamic ColoringPolar Sector Dynamic Coloring

Stroke Styling​

Changing stroke color and thickness:

# Stroke width and color
sector.set_stroke(thickness=1.5, color='#333333')

Series Utility Methods​

# Set a name for the sector (used in legend and tooltip)
sector.set_name("Sector")

# Highlight the series fully (1.0 = max highlight)
sector.set_highlight(1.0)

# Enable or disable theme-based visual effects
sector.set_effect(True)

# Toggle series visibility (False hides it from view)
sector.set_visible(True)

# Permanently remove the series from the chart
sector.dispose()

Legend​

Please see common legend section.

Examples​

Link to the examples