For each zero-valued pixel in the source, get the distance to the nearest non-zero pixels in the given direction.
Returns a band of floating point distances called "distance".
| Usage | Returns | Image.directionalDistanceTransform(angle, maxDistance, labelBand) | Image |
| Argument | Type | Details | this: source | Image | The source image. |
angle | Float | The angle, in degrees, at which to search for non-zero pixels. |
maxDistance | Integer | The maximum distance, in pixels, over which to search. |
labelBand | String, default: null | If provided, multi-band inputs are permitted and only this band is used for searching. All other bands are returned and populated with the per-band values found at the searched non-zero pixels in the label band. |