29 lines
1.0 KiB
Markdown
29 lines
1.0 KiB
Markdown
# Radial Profile
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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.
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## Inputs
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| Name | Type | Required | Description |
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|------|------|----------|-------------|
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| field | DATA_FIELD | Yes | Input field |
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## Outputs
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| Name | Type | Description |
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|------|------|-------------|
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| profile | LINE | Radially averaged profile vs. radius |
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## Controls
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| Name | Type | Default | Description |
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|------|------|---------|-------------|
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| cx | FLOAT | 0.5 | Centre x position as a fraction of field width (0 = left, 1 = right) |
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| cy | FLOAT | 0.5 | Centre y position as a fraction of field height (0 = top, 1 = bottom) |
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| n_bins | INT | 128 | Number of radial bins (4-4096) |
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## Notes
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- Pixels are assigned to radial bins by Euclidean distance; bins near the centre contain fewer pixels and may be noisier.
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- Physical x-axis units come from the field's si_unit_xy; uncalibrated fields produce pixel-unit radii.
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