43 lines
1.2 KiB
Markdown
43 lines
1.2 KiB
Markdown
# Set Pixel
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The set pixel function. #set pixel.
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Set the on/off state of pixel in an [Image](/reference/images/image).
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## JavaScript
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```sig
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export function setPixel(_this: micro_bit.Image, x: number, y: number, value: boolean)
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```
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## Parameters
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* x - [Number](/types/number); the *x coordinate* or horizontal position of a pixel in an [image](/reference/images/image)
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* x - [Number](/types/number); the *y coordinate* or vertical position of a pixel in an [image](/reference/images/image)
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* value -[Boolean](/blocks/logic/boolean); the on/off state of a pixel; `true` for on, `false` for off
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## x, y coordinates?
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To figure out the ``x``, ``y`` coordinates, see [LED screen](/device/screen).
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## Example
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The following example creates an image and stores it in the `img` variable. The `set pixel` function sets the centre pixel off, before `img` is shown using `show image`.
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```blocks
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let img = images.createImage(`
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. . # . .
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. # . # .
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. . # . .
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. # . # .
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. . # . .
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`)
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img.setPixel(2, 2, false)
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img.showImage(0)
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```
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## See also
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[pixel](/reference/images/pixel), [show image](/reference/images/show-image), [image](/reference/images/image), [create image](/reference/images/create-image), [scroll image](/reference/images/scroll-image)
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