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Reduce classes to major

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This commit is contained in:
lukasmartinelli 2016-10-28 16:54:23 +02:00
parent ea2530788f
commit c1b1e980ed
1 changed files with 7 additions and 6 deletions
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13
layers/highway/types.sql
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@ -1,14 +1,14 @@
DO $$ DO $$
BEGIN BEGIN
IF NOT EXISTS (SELECT 1 FROM pg_type WHERE typname = 'highway_class') THEN IF NOT EXISTS (SELECT 1 FROM pg_type WHERE typname = 'highway_class') THEN
CREATE TYPE highway_class AS ENUM ('motorway', 'trunk', 'primary', 'secondary', 'tertiary', 'minor_road', 'path'); CREATE TYPE highway_class AS ENUM ('motorway', 'major_road', 'minor_road', 'path');
END IF; END IF;
END END
$$; $$;
DO $$ DO $$
BEGIN BEGIN
IF NOT EXISTS (SELECT 1 FROM pg_type WHERE typname = 'highway_class') THEN IF NOT EXISTS (SELECT 1 FROM pg_type WHERE typname = 'highway_properties') THEN
CREATE TYPE highway_properties AS ENUM ('bridge:oneway', 'tunnel:oneway', 'ramp', 'ford', 'bridge', 'tunnel', 'oneway'); CREATE TYPE highway_properties AS ENUM ('bridge:oneway', 'tunnel:oneway', 'ramp', 'ford', 'bridge', 'tunnel', 'oneway');
END IF; END IF;
END END
@ -18,10 +18,11 @@ $$;
CREATE OR REPLACE FUNCTION to_highway_class(highway TEXT) RETURNS highway_class AS $$ CREATE OR REPLACE FUNCTION to_highway_class(highway TEXT) RETURNS highway_class AS $$
SELECT CASE SELECT CASE
WHEN highway IN ('motorway', 'motorway_link') THEN 'motorway'::highway_class WHEN highway IN ('motorway', 'motorway_link') THEN 'motorway'::highway_class
WHEN highway IN ('trunk', 'trunk_link') THEN 'trunk'::highway_class -- A major class is helpful in styling - one can still differentiate on a finer level using the subclass
WHEN highway IN ('primary', 'primary_link') THEN 'primary'::highway_class WHEN highway IN ('trunk', 'trunk_link',
WHEN highway IN ('secondary', 'secondary_link') THEN 'secondary'::highway_class 'primary', 'primary_link',
WHEN highway IN ('tertiary', 'tertiary_link') THEN 'tertiary'::highway_class 'secondary', 'secondary_link',
'tertiary', 'tertiary_link') THEN 'major_road'::highway_class
WHEN highway IN ('unclassified', 'residential', 'living_street', 'road', 'track', 'service') THEN 'minor_road'::highway_class WHEN highway IN ('unclassified', 'residential', 'living_street', 'road', 'track', 'service') THEN 'minor_road'::highway_class
WHEN highway IN ('pedestrian', 'path', 'footway', 'cycleway', 'steps') THEN 'path'::highway_class WHEN highway IN ('pedestrian', 'path', 'footway', 'cycleway', 'steps') THEN 'path'::highway_class
ELSE NULL ELSE NULL