SYNC X VALUES FOR THE SELECTED COLUMNS¶
Synchronises the X-axis values across one or more curve columns in a dataset, with optional monotonicity enforcement and digitisation. Use it to align time/frequency axes before cross-column curve comparisons or batch post-processing.
When to use¶
Classification: process.
Tagged: align, columns, curve, dataset, digitize, monotonic, sync, x_axis.
Inputs¶
| Label | ID | Type | Default | Required | Description |
|---|---|---|---|---|---|
| Dataset | dataset_1 | dataset | — | Input dataset containing the curve columns to be synchronised; each selected column must hold (x, y) curve data. | |
| Choose Column | target_column | text | — | One or more column names from dataset_1 whose X values will be synchronised; populated dynamically from the chosen dataset. | |
| Sync Type | sync_type | scalar | first_last | Synchronisation strategy: ‘first_last’ (default) aligns curves to a shared first/last X range; ‘yes’ forces full sync across all X points; ‘yes_min_zero’ same as yes but pins the minimum X to zero; ‘no’ skips X synchronisation. | |
| Monotonic | monotonic | scalar | no | Enforces monotonic ordering after sync — ‘no’ (default) skips enforcement; ‘x’ enforces monotone X; ‘y’ enforces monotone Y; ‘xy’ enforces both axes simultaneously. | |
| Digitize | digitize | scalar | 0 | Uniform re-sampling step size (positive number); when > 0 all selected curves are digitised (re-sampled) at this X interval after syncing; leave at default 0 to skip digitisation. |
Outputs¶
| Label | ID | Type | Description |
|---|---|---|---|
| Synced Dataset | synced_dataset | dataset | A copy of the input dataset with the selected curve columns replaced by their X-synchronised (and optionally monotonised/digitised) counterparts; all other columns are preserved unchanged. |
Disciplines¶
- data.curve.pair
- data.curve.transform
- data.dataset.transform
Runnable example¶
A runnable example is registered for this worker. Open the example workflow on the d3VIEW canvas: /api/workflow/example?id=dataset_sync_curve_columns
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