Class Downsample

Static runChartDownsample

• runChartDownsample(table, xCol, yCols, width, xRange?): Promise<Table>

• Downsamples a table so that the data can be used for a time-series line plot. The downsampled table should have the same visual fidelity as the original table, but with fewer rows.

  Parameters

  • table: Table

    The table to downsample.

  • xCol: string

    The name of the X column to downsample. Must be an Instant or long.

  • yCols: string[]

    The names of the Y columns to downsample.

  • width: number

    The width of the visible area in pixels.

  • Optional xRange: LongWrapper[]

    The visible range as [start, end] or null to always use all data.

  Returns Promise<Table>

  A promise that resolves to the downsampled table.