dem_fill_sinks — DEM `hydrology` op

• Data kinds: depth → depth

• Call: import demops; demops.dem_fill_sinks(dem, epsilon=0.0, nodata='error') (or opsdem.get("dem_fill_sinks"))

Usage

> This operator's description has not been translated yet. The original text follows as it is.

窪地を埋めた DEM。Barnes, Lehman & Mulla (2014) の priority-flood。

`epsilon` に微小値(例 1e-6)を与えると、埋めた平坦面にわずかな傾斜を付ける

(これが無いと平坦面で流向が決まらず、集水量が途中で消える)。

`nodata は :data:NODATA_POLICIES。"outlet"` なら欠測セルを外周と同じ

種として扱う(水域に流れ込んだ水はそこで系を出る)。`"barrier"` なら

欠測は埋めの対象から外し、値を `nan` のまま返す。

出力は入力以上(`filled >= dem`、欠測を除く)。

Detailed usage guide

• dem_terrain_analysis family guide

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• poc_dem_terrain — py -3.11 examples/poc_dem_terrain.py

Ops the type connects to (they accept `depth` as input)

dem_slope · dem_aspect · dem_curvature · dem_roughness · dem_tpi · dem_hillshade · dem_flow_direction · dem_flow_accumulation

Same category (`hydrology`)

dem_flow_direction · dem_flow_accumulation · dem_stream_network

*Provenance: demops.py — DEM operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

dem_fill_sinks — DEM hydrology op