Cross Section
Extract a cross-section height profile along a line between two draggable points on a DATA_FIELD. Equivalent to gwy_data_field_get_profile.
Inputs
| Name |
Type |
Required |
Description |
| field |
DATA_FIELD |
Yes |
Input height field |
| marker_pair |
COORDPAIR |
No |
Locks both line endpoints from an external coordinate pair |
Outputs
| Name |
Type |
Description |
| profile |
LINE |
Height profile along the cross-section line |
| marker_pair |
COORDPAIR |
Current endpoint coordinates (passthrough for chaining) |
Controls
| Name |
Type |
Default |
Description |
| extend |
dropdown |
none |
none: profile between the two markers; to_edges: extend line to image borders |
| n_samples |
INT |
0 |
Number of sample points along the profile (0 = auto, one per pixel diagonal) |
Limitations
- Profile is sampled using cubic spline interpolation (order 3); sharp step edges may show ringing.
- Physical x-axis of the output profile is the Euclidean distance in field xy units.
