Sample data to speed up executions

Use data sampling to check a visualization quickly: the backend processes only a percentage of the rows in the fact datasets instead of all of them. For how sampling works in GoodData, see Data sampling in the GoodData Cloud docs.

Sample the data of a visualization

Pass dataSamplingPercentage in the execConfig prop. The value is a percentage of the available rows, so 5 runs the execution on five percent of the data:

import { InsightView } from "@gooddata/sdk-ui-ext";

export const SampledVisualization = () => (
    <InsightView
        insight="<visualization-id>"
        execConfig={{ dataSamplingPercentage: 5 }}
    />
);

Smaller values return faster but give rougher aggregates; larger values are closer to the real numbers but take longer.

Notes

• execConfig is an IExecutionConfig object, so you can combine dataSamplingPercentage with other execution options, such as a time zone or a date format.
• Sampling changes only the execution on the backend. Loading, error handling, and drilling of InsightView work the same.
• The results are approximate. Don’t sample executions behind exports or numbers your users rely on, and remove the option before you ship a dashboard to production.