Add an input sampling strategy

If your input datasets are large, you can speed up preview times by adding a sampling strategy to those inputs.

1. Right-click the input node that you would like to sample, then select Sampling strategies in the dropdown menu.

2. From the sampling strategies dialog, select the desired input dataset.

3. Choose the Percentage strategy, and enter a number between 1 and 100 to downsample your input.

4. Close the dialog. A blue badge should now appear on the top right of your input node, indicating that a sampling strategy has been applied.

The preview panel of any nodes downstream of the input will also indicate that sampling was applied.

Filter sampling strategy for file datasets

For file datasets, use a Filtered preview sampling strategy to select files based on metadata columns.

To configure a filter sampling strategy:

1. Open the sampling strategies dialog and select a file dataset input. Inputs of different types appear in separate sections of the dialog.
2. Choose Filtered preview from the sampling strategy options.
3. Configure your filter conditions based on the available file metadata columns.

Apply a sampling strategy to multiple inputs

In the sampling strategies dialog, select Apply to all inputs to set the same strategy for all compatible inputs.