Data update

Task/Map-range/DuckDB/map-range.duckdb

@@ -0,0 +1,9 @@
+# x is the value to be mapped.
+# The ranges, a and b, should each be an array defining the
+# left-most and right-most points of the range.
+create or replace function maprange(a, b, x) as
+  b[1] + (((x - a[1]) * (b[2] - b[1]::DOUBLE)) / (a[2] - a[1]::DOUBLE)) ;
+
+# Example 1: a single value
+# (Conversion to floating point will be automatic)
+select maprange([0,10], [-1, 0], 6) as mapped;