Multiple Profiles
Extract and compare line profiles from two fields along a chosen row or column. Supports overlay, mean, and difference modes. Equivalent to Gwyddion's multiprofile.c module.
Inputs
| Name |
Type |
Required |
Description |
| field_a |
DATA_FIELD |
Yes |
First input field |
| field_b |
DATA_FIELD |
Yes |
Second input field |
Outputs
| Name |
Type |
Description |
| profile |
LINE_DATA |
Resulting line profile |
Controls
| Name |
Type |
Default |
Description |
| row |
INT |
-1 |
Row (horizontal) or column (vertical) index to extract; -1 uses the centre row/column (-1–10000) |
| direction |
dropdown |
horizontal |
Profile direction: horizontal (extract a row) or vertical (extract a column) |
| mode |
dropdown |
overlay |
Combination mode: overlay (field_a profile only), mean (average of both), or difference (field_a minus field_b) |
Notes
- When the two fields have different sizes, profiles are truncated to the shorter length so they can be compared element-wise.
- The x-axis of the output profile uses physical spacing (dx for horizontal, dy for vertical) from field_a.
- The output y-unit inherits field_a's z-unit.
- Difference mode is useful for visualising drift, processing artefacts, or changes between sequential scans.
