Fractal Dimension
Calculate the surface fractal dimension using Gwyddion's partitioning, cube counting, triangulation, power-spectrum, or HHCF methods. The in-node graph shows the log-log curve and allows dragging the fit range.
Inputs
| Name |
Type |
Required |
Description |
| field |
DATA_FIELD |
Yes |
Input surface field |
Outputs
| Name |
Type |
Description |
| dimension |
FLOAT |
Estimated fractal dimension |
Controls
| Name |
Type |
Default |
Description |
| method |
dropdown |
partitioning |
Algorithm: partitioning, cube_counting, triangulation, psdf (power spectrum), or hhcf (structure function) |
| interpolation |
dropdown |
linear |
Interpolation used when resampling the field to a square grid: linear, nearest, or cubic |
Limitations
- The field is resampled to a square grid internally; highly anisotropic scan sizes may introduce interpolation artefacts.
- Fit range can be adjusted interactively on the log-log plot; the default range covers the full data.
