19 lines
643 B
PL/PgSQL
19 lines
643 B
PL/PgSQL
\i wm.sql
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drop table if exists wm_debug;
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create table wm_debug(stage text, name text, gen bigint, nbend bigint, way geometry, props jsonb);
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do $$
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declare
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npoints bigint;
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secs bigint;
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begin
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select * from ST_SimplifyWM_Estimate((select st_union(way) from agg_rivers)) into npoints, secs;
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raise notice 'Total points: %', npoints;
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raise notice 'Expected duration: %s (+-%s), depending on bend complexity', ceil(secs), floor(secs*.5);
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end $$ language plpgsql;
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drop table if exists wm_demo;
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create table wm_demo (name text, i bigint, way geometry);
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insert into wm_demo (name, way) select name, ST_SimplifyWM(way, name) from agg_rivers;
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