40 lines
1.3 KiB
Markdown
40 lines
1.3 KiB
Markdown
# Map
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Remaps the specified value from one range to another. This function
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maps the value of ``from low`` to the value of ``to low``, the value
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of ``from high`` to the value of ``to high``, and intermediate values
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to intermediate values.
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This function does not constrain values to the ranges, because
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out-of-range values are sometimes intended and useful. If you need to
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limit a range, you can use the ``Math.clamp`` function before or after
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calling this function.
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```sig
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pins.map(0, 0, 4, 0, 1023);
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```
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### Parameters
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* ``value``: a [number](/reference/types/number) that specifies the value to map
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* ``fromLow``: a [number](/reference/types/number) that specifies the lower bound of the origin interval
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* ``fromHigh``: a [number](/reference/types/number) that specifies the upper bound of the origin interval
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* ``toLow``: a [number](/reference/types/number) that specifies the lower bound of the target interval
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* ``toHigh``: a [number](/reference/types/number) that specifies the upper bound of the target interval
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## Example
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This example maps the value read from the analog pin `P0` to an LED
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coordinate between `0` and `4`.
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```blocks
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let value1 = pins.analogReadPin(AnalogPin.P0)
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let index = pins.map(value1, 0, 1023, 0, 4)
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led.plot(0, index)
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```
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### See also
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[analog read pin](/reference/pins/analog-read-pin)
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