31 lines
2.0 KiB
PL/PgSQL
31 lines
2.0 KiB
PL/PgSQL
CREATE OR REPLACE FUNCTION cartodb.CDB_ZoomFromScale(scaleDenominator numeric) RETURNS int AS $$
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BEGIN
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CASE
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WHEN scaleDenominator > 500000000 THEN RETURN 0;
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WHEN scaleDenominator <= 500000000 AND scaleDenominator > 200000000 THEN RETURN 1;
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WHEN scaleDenominator <= 200000000 AND scaleDenominator > 100000000 THEN RETURN 2;
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WHEN scaleDenominator <= 100000000 AND scaleDenominator > 50000000 THEN RETURN 3;
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WHEN scaleDenominator <= 50000000 AND scaleDenominator > 25000000 THEN RETURN 4;
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WHEN scaleDenominator <= 25000000 AND scaleDenominator > 12500000 THEN RETURN 5;
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WHEN scaleDenominator <= 12500000 AND scaleDenominator > 6500000 THEN RETURN 6;
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WHEN scaleDenominator <= 6500000 AND scaleDenominator > 3000000 THEN RETURN 7;
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WHEN scaleDenominator <= 3000000 AND scaleDenominator > 1500000 THEN RETURN 8;
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WHEN scaleDenominator <= 1500000 AND scaleDenominator > 750000 THEN RETURN 9;
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WHEN scaleDenominator <= 750000 AND scaleDenominator > 400000 THEN RETURN 10;
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WHEN scaleDenominator <= 400000 AND scaleDenominator > 200000 THEN RETURN 11;
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WHEN scaleDenominator <= 200000 AND scaleDenominator > 100000 THEN RETURN 12;
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WHEN scaleDenominator <= 100000 AND scaleDenominator > 50000 THEN RETURN 13;
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WHEN scaleDenominator <= 50000 AND scaleDenominator > 25000 THEN RETURN 14;
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WHEN scaleDenominator <= 25000 AND scaleDenominator > 12500 THEN RETURN 15;
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WHEN scaleDenominator <= 12500 AND scaleDenominator > 5000 THEN RETURN 16;
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WHEN scaleDenominator <= 5000 AND scaleDenominator > 2500 THEN RETURN 17;
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WHEN scaleDenominator <= 2500 AND scaleDenominator > 1500 THEN RETURN 18;
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WHEN scaleDenominator <= 1500 AND scaleDenominator > 750 THEN RETURN 19;
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WHEN scaleDenominator <= 750 AND scaleDenominator > 500 THEN RETURN 20;
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WHEN scaleDenominator <= 500 AND scaleDenominator > 250 THEN RETURN 21;
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WHEN scaleDenominator <= 250 AND scaleDenominator > 100 THEN RETURN 22;
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WHEN scaleDenominator <= 100 THEN RETURN 23;
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END CASE;
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END
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$$ LANGUAGE plpgsql IMMUTABLE;
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