Graham McIntire
f77c493fa3
Earlier commit a9aa8bf9 had the message but only the test tweak made
it through pre-commit stashing. This is the implementation:
- lib/towerops/lidar/sources/usgs_ned.ex
- lib/towerops/lidar.ex (mosaic_from_ned + get_elevation_from_ned
fallback paths)
- lib/towerops/coverages/building.ex + migration scaffolding
- lib/towerops/workers/coverage_worker.ex error message
- test_helper.exs and the lidar test changes
40 lines
1.4 KiB
Elixir
40 lines
1.4 KiB
Elixir
defmodule Towerops.Repo.Migrations.CreateCoverageBuildings do
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use Ecto.Migration
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def change do
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create table(:coverage_buildings, primary_key: false) do
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add :id, :bigserial, primary_key: true
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# Provider key — lets us mix sources later (Microsoft, OpenStreetMap,
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# custom user uploads) without cross-contaminating queries.
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add :source, :string, null: false, default: "ms_global_ml"
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# WGS84 polygon. PostGIS extension is enabled by an earlier migration.
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add :geom, :"geometry(POLYGON, 4326)", null: false
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# Top-of-roof height above ground in metres. May be NULL when the
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# source has no height data — the propagation pipeline falls back
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# to a single-storey default.
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add :height_m, :float
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add :derived_height, :boolean, null: false, default: false
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# External provider IDs we keep so a re-import is idempotent.
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add :ms_footprint_id, :string
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timestamps(type: :utc_datetime, updated_at: false)
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end
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# Spatial GiST index for the bounding-box intersect queries the
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# coverage worker runs when it builds the per-tile DSM.
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execute(
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"CREATE INDEX coverage_buildings_geom_idx ON coverage_buildings USING GIST (geom)",
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"DROP INDEX coverage_buildings_geom_idx"
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)
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create index(:coverage_buildings, [:source])
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create unique_index(:coverage_buildings, [:source, :ms_footprint_id],
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where: "ms_footprint_id IS NOT NULL"
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)
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end
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end
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