30 lines
928 B
PL/PgSQL
30 lines
928 B
PL/PgSQL
\i wm.sql
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insert into wm_visuals(name, way) values('salcia-visincia',
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st_closestpoint(
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(select way from wm_rivers where name='Šalčia'),
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(select way from wm_rivers where name='Visinčia')
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)
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);
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insert into wm_visuals(name, way) values('nemunas-merkys',
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st_closestpoint(
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(select way from wm_rivers where name='Nemunas'),
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(select way from wm_rivers where name='Merkys')
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)
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);
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do $$
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declare
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npoints bigint;
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secs bigint;
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begin
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select * from ST_SimplifyWM_Estimate((select st_union(way) from wm_rivers)) into npoints, secs;
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raise notice 'Total points: %', npoints;
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raise notice 'Expected duration: %s (+-%s)', ceil(secs), floor(secs*.5);
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end $$ language plpgsql;
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delete from wm_debug where name in (select distinct name from wm_rivers);
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delete from wm_demo where name in (select distinct name from wm_rivers);
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insert into wm_demo (name, way) select name, ST_SimplifyWM(way, name) from wm_rivers;
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