Polar Microphone Sensitivity JavaScript Chart

This example showcases a simple Polar Chart with five Line Series.

Polar Charts are used for visualizing data relationships in terms of radiuses and angles.

Polar coordinate system and PolarLineSeries

    // Data point angle as degrees [0, 360].
    angle: 0,
    // Data point position on the *Amplitude Axis*. Determines its location between the Charts origin and outer edge.
    amplitude: 50

PolarLineSeries connects a list of such PolarPoints with a continuous line.

Two Polar Line Series


The coordinate system can be rotated with methods of PolarRadialAxis*.

// Configure Polar Radial Axis.
const radialAxis = polar.getRadialAxis()
    // 0 = North
    // Clockwise direction.


Similarly, the visible range of amplitude values can be configured with methods of PolarAmplitudeAxis. The default configuration is to fit

const amplitudeAxis = polar.getAmplitudeAxis()
    // Set amplitude interval explicitly.
    // [-39 dB, 0 dB]
    .setInterval(-39, 0)
    .setTitle('Sensitivity (dB)')