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Update DEM_Terrarium_H3_Example #1670

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Update DEM_Terrarium_H3_Example #1670

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9 changes: 7 additions & 2 deletions community/stephenkentdata/DEM_Terrarium_H3_Example/DEM_Terrarium_H3_Example.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
@fused.udf
def udf(bounds: fused.types.Bounds= None,
res:int=11,
res:int=None,
stats_type:str="mean",
png:bool=False,
color_scale:float=1
Expand All @@ -15,6 +15,7 @@ def udf(bounds: fused.types.Bounds= None,
print(image_path)



if tile.iloc[0].z < 10:
print("Zoom in more to load DEM")
return None
Expand All @@ -25,9 +26,13 @@ def udf(bounds: fused.types.Bounds= None,
if png:
return common.arr_to_plasma(arr, min_max=(-1000,2000/color_scale**0.5), colormap='plasma')
else:
if res is None:
res_offset = 0 # lower makes the hex finer
res = max(min(int(3 + z / 1.5), 12) - res_offset, 2)
print(res)
# raster to vector using common Fused function
df_latlng = common.arr_to_latlng(arr, bounds)

# Create H3 hexagons with DuckDB and numpy
df = aggregate_df_hex(tile, df_latlng, res, latlng_cols=("lat", "lng"), stats_type=stats_type)

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4 changes: 2 additions & 2 deletions community/stephenkentdata/DEM_Terrarium_H3_Example/meta.json
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Original file line number Diff line number Diff line change
Expand Up @@ -33,8 +33,8 @@
"@@function": "colorContinuous",
"attr": "metric",
"domain": [
15400,
1262
2800,
162
],
"steps": 50,
"colors": "BluYl",
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