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simplifying raster experiments

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This commit is contained in:
John Krauss
2016-12-02 19:33:16 +00:00
parent cbe7b6dd15
commit 59857355c7
1 changed files with 35 additions and 20 deletions
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src/pg/sql/42_observatory_exploration.sql
+35 -20
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@@ -412,6 +412,12 @@ BEGIN
END END
$$ LANGUAGE plpgsql; $$ LANGUAGE plpgsql;
--create table observatory.obs_column_table_tile_simple as select table_id, column_id, tile_id, st_band(tile, 2) as tile from observatory.obs_column_table_tile ;
--create table observatory.obs_column_table_tile_simpler as select table_id,
--column_id, tile_id, st_reclass(tile, '0-65536:0-65536', '16BUI') as tile
--from observatory.obs_column_table_tile_simple ;
CREATE OR REPLACE FUNCTION cdb_observatory._OBS_GetGeometryScores( CREATE OR REPLACE FUNCTION cdb_observatory._OBS_GetGeometryScores(
bounds Geometry(Geometry, 4326) DEFAULT NULL, bounds Geometry(Geometry, 4326) DEFAULT NULL,
filter_geom_ids TEXT[] DEFAULT NULL, filter_geom_ids TEXT[] DEFAULT NULL,
@@ -439,16 +445,19 @@ BEGIN
FROM ( FROM (
WITH clipped_geom AS ( WITH clipped_geom AS (
SELECT column_id, table_id SELECT column_id, table_id
, CASE WHEN $1 IS NOT NULL THEN ST_Clip(tile, $1, True) , CASE WHEN $1 IS NOT NULL THEN ST_Clip(tile, 1, $1, True)
ELSE tile END clipped_tile ELSE tile END clipped_tile
--, tile as clipped_tile
, tile , tile
FROM observatory.obs_column_table_tile FROM observatory.obs_column_table_tile_simpler
WHERE ($1 IS NULL OR ST_Intersects($1, tile)) WHERE ($1 IS NULL OR ST_Intersects($1, tile))
AND (column_id = ANY($2) OR cardinality($2) = 0) AND (column_id = ANY($2) OR cardinality($2) = 0)
), clipped_geom_countagg AS ( ), clipped_geom_countagg AS (
SELECT column_id, table_id SELECT column_id, table_id
, ST_CountAgg(clipped_tile, 2, True)::Numeric notnull_pixels --, 10 notnull_pixels
, ST_CountAgg(clipped_tile, 2, False)::Numeric pixels --, 10 pixels
, ST_CountAgg(clipped_tile, 1, True)::Numeric notnull_pixels
, ST_CountAgg(clipped_tile, 1, False)::Numeric pixels
FROM clipped_geom FROM clipped_geom
GROUP BY column_id, table_id GROUP BY column_id, table_id
) SELECT ) SELECT
@@ -457,23 +466,29 @@ BEGIN
THEN cdb_observatory.FIRST(notnull_pixels) / cdb_observatory.FIRST(pixels) THEN cdb_observatory.FIRST(notnull_pixels) / cdb_observatory.FIRST(pixels)
ELSE 1 ELSE 1
END)::Numeric AS notnull_percent END)::Numeric AS notnull_percent
--, null::numeric as notnull_percent
--, 10::numeric as numgeoms
, (CASE WHEN cdb_observatory.FIRST(notnull_pixels) > 0 , (CASE WHEN cdb_observatory.FIRST(notnull_pixels) > 0
THEN (ST_SummaryStatsAgg(clipped_tile, 2, True)).sum THEN (ST_SummaryStatsAgg(clipped_tile, 1, True)).sum
ELSE COALESCE(ST_Value(cdb_observatory.FIRST(tile), 2, ST_PointOnSurface($1)), 0) * (ST_Area($1) / ST_Area(ST_PixelAsPolygon(cdb_observatory.FIRST(tile), 0, 0)) * cdb_observatory.FIRST(pixels)) ELSE COALESCE(ST_Value(cdb_observatory.FIRST(tile), 1, ST_PointOnSurface($1)), 0) * (ST_Area($1) / ST_Area(ST_PixelAsPolygon(cdb_observatory.FIRST(tile), 0, 0)) * cdb_observatory.FIRST(pixels))
END)::Numeric AS numgeoms END)::Numeric AS numgeoms
, (CASE WHEN cdb_observatory.FIRST(notnull_pixels) > 0
THEN (ST_SummaryStatsAgg(clipped_tile, 3, True)).mean , null::numeric as percentfill
ELSE COALESCE(ST_Value(cdb_observatory.FIRST(tile), 3, ST_PointOnSurface($1)), 0) --, (CASE WHEN cdb_observatory.FIRST(notnull_pixels) > 0
END)::Numeric AS percentfill -- THEN (ST_SummaryStatsAgg(clipped_tile, 3, True)).mean
, ((ST_Area(ST_Transform($1, 3857)) / 1000000) / NullIf( -- ELSE COALESCE(ST_Value(cdb_observatory.FIRST(tile), 3, ST_PointOnSurface($1)), 0)
CASE WHEN cdb_observatory.FIRST(notnull_pixels) > 0 -- END)::Numeric AS percentfill
THEN (ST_SummaryStatsAgg(clipped_tile, 1, True)).mean , null::numeric estnumgeoms, null::numeric meanmediansize
ELSE Coalesce(ST_Value(cdb_observatory.FIRST(tile), 1, ST_PointOnSurface($1)), 0) --, ((ST_Area(ST_Transform($1, 3857)) / 1000000) / NullIf(
END, 0))::Numeric AS estnumgeoms -- CASE WHEN cdb_observatory.FIRST(notnull_pixels) > 0
, (CASE WHEN cdb_observatory.FIRST(notnull_pixels) > 0 -- THEN (ST_SummaryStatsAgg(clipped_tile, 1, True)).mean
THEN (ST_SummaryStatsAgg(clipped_tile, 1, True)).mean -- ELSE Coalesce(ST_Value(cdb_observatory.FIRST(tile), 1, ST_PointOnSurface($1)), 0)
ELSE COALESCE(ST_Value(cdb_observatory.FIRST(tile), 1, ST_PointOnSurface($1)), 0) -- END, 0))::Numeric AS estnumgeoms
END)::Numeric AS meanmediansize --, (CASE WHEN cdb_observatory.FIRST(notnull_pixels) > 0
-- THEN (ST_SummaryStatsAgg(clipped_tile, 1, True)).mean
-- ELSE COALESCE(ST_Value(cdb_observatory.FIRST(tile), 1, ST_PointOnSurface($1)), 0)
-- END)::Numeric AS meanmediansize
FROM clipped_geom_countagg a, clipped_geom b FROM clipped_geom_countagg a, clipped_geom b
WHERE a.table_id = b.table_id WHERE a.table_id = b.table_id
AND a.column_id = b.column_id AND a.column_id = b.column_id
@@ -483,4 +498,4 @@ BEGIN
$string$) USING bounds, filter_geom_ids, desired_num_geoms; $string$) USING bounds, filter_geom_ids, desired_num_geoms;
RETURN; RETURN;
END END
$$ LANGUAGE plpgsql; $$ LANGUAGE plpgsql IMMUTABLE;