Function initFrequencyChart

initFrequencyChart(
    canvasId: string,
    totals: FrequencyTotals,
): Promise<
    | Chart<
        keyof ChartTypeRegistry,
        (number | Point | [number, number] | BubbleDataPoint | null)[],
        unknown,
    >
    | null,
>
Initialize the frequency chart (line chart). Shows learning activity evolution over time.
Parameters
- canvasId: string
  The ID of the canvas element
- totals: FrequencyTotals
  The frequency totals data
Returns Promise<
    | Chart<
        keyof ChartTypeRegistry,
        (number | Point | [number, number] | BubbleDataPoint | null)[],
        unknown,
    >
    | null,
>
- Defined in modules/admin/pages/statistics_charts.ts:190