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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.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2026-04-20 UTC."],[],["The `directionalDistanceTransform` function calculates the distance from each zero-valued pixel in a source image to the nearest non-zero pixel along a specified angle. It returns an image containing these floating-point distances. The search is performed up to a maximum distance. Optionally, a specific band can be defined as the target for the search, while preserving the other bands with the values found at searched pixel locations.\n"]]
