pxt-calliope/docs/reference/led/plot.md
Sam El-Husseini e3975e65e5 pxt-microbit Accessibility PR ()
* Accessibility changes
2017-09-07 13:42:08 -07:00

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# Plot
Turn on the LED light you say on the [LED screen](/device/screen).
```sig
led.plot(0,0);
```
## ~hint
Use [unplot](/reference/led/unplot) to turn **off** an LED.
## ~
## Parameters
* ``x`` is a [number](/types/number) that means the
horizontal spot on the LED screen (from left to right: 0, 1, 2, 3,
or 4)
* ``y`` is a [number](/types/number) that means the vertical
spot on the LED screen (from top to bottom: 0, 1, 2, 3, or 4)
If a parameter is [out of bounds](/reference/out-of-bounds) (a value
other than 0 to 4), then this function will do nothing.
## ~hint
The LED screen is a solid square of LEDs with five LEDs on each side.
To learn more about how you number the LEDs with ``x`` and ``y``
coordinates, see [LED screen](/device/screen).
## ~
## Example: One LED
This program turns on the bottom right LED.
```blocks
led.plot(4, 4)
```
## Example: Square
This program uses a [for loop](/blocks/loops/for)
and the `plot` function
to make a square around the edges of the LED screen.
```blocks
for (let i = 0; i < 5; i++) {
led.plot(0, i)
led.plot(4, i)
led.plot(i, 0)
led.plot(i, 4)
basic.pause(500)
}
```
## ~hint
Use the [point](/reference/led/point) function to find out if an LED is
on or off.
## ~
## See also
[unplot](/reference/led/unplot), [point](/reference/led/point), [LED screen](/device/screen)