Migrate docs from the other repo

docs/reference/pins/map.md

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+# Map
+
+Re-maps a number from one range to another. That is, a value of ``from low`` would get mapped to ``to low``, a value of ``from high`` to ``to high``, values in-between to values in-between, etc.
+
+Does not constrain values to within the range, because out-of-range values are sometimes intended and useful. The `math->clamp` function may be used either before or after this function, if limits to the ranges are desired.
+
+```sig
+pins.map(0, 0, 4, 0, 1023);
+```
+
+### Parameters
+
+* ``value``: [Number](/microbit/reference/types/number) - the value to map
+* ``from low``: [Number](/microbit/reference/types/number)  - lower bound of the origin interval
+* ``from high``: [Number](/microbit/reference/types/number)  - upper bound of the origin interval
+* ``to low``: [Number](/microbit/reference/types/number)  - lower bound of the target interval
+* ``to high``: [Number](/microbit/reference/types/number)  - upper bound of the target interval
+
+## Example
+
+Map the value read from the analog pin ``P0`` to an LED index between ``0`` and ``4``.
+
+```blocks
+let value1 = pins.analogReadPin(AnalogPin.P0)
+let index = pins.map(value1, 0, 1023, 0, 4)
+led.plot(0, index)
+```
+
+### See also
+
+[analog read pin](/microbit/reference/pins/analog-read-pin)
+