Radial Profile
Compute the azimuthally averaged radial profile from a centre point. The output x-axis is radius in physical xy units. Equivalent to gwy_data_field_angular_average used by Gwyddion's Radial Profile tool.
Inputs
| Name |
Type |
Required |
Description |
| field |
DATA_FIELD |
Yes |
Input field |
Outputs
| Name |
Type |
Description |
| profile |
LINE |
Radially averaged profile vs. radius |
Controls
| Name |
Type |
Default |
Description |
| cx |
FLOAT |
0.5 |
Centre x position as a fraction of field width (0 = left, 1 = right) |
| cy |
FLOAT |
0.5 |
Centre y position as a fraction of field height (0 = top, 1 = bottom) |
| n_bins |
INT |
128 |
Number of radial bins (4–4096) |
Limitations
- Pixels are assigned to radial bins by Euclidean distance; bins near the centre contain fewer pixels and may be noisier.
- Physical x-axis units come from the field's si_unit_xy; uncalibrated fields produce pixel-unit radii.
