40 lines
1.4 KiB
Markdown
40 lines
1.4 KiB
Markdown
# Plot Bar Graph
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Displays a bar graph of the numbers you say.
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A bar graph is a kind of chart that shows numbers as lines with different lengths.
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```sig
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led.plotBarGraph(2, 20);
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```
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### Parameters
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* ``value`` is a [number](/reference/types/number) that means what you
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are measuring or trying to show. For example, if you are measuring
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the temperature of ice with the BBC micro:bit, ``value`` might be `0`
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because the temperature might be 0 degrees centigrade.
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* ``high`` is a [number](/reference/types/number) that means the highest
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possible number that the ``value`` parameter can be. This number is
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also the tallest that the lines in the bar chart can be.
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### Example: chart acceleration
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This program shows a bar graph of the [acceleration](/reference/input/acceleration)
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in the `x` direction of the micro:bit.
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The micro:bit's `x` direction is from left to right (or right to left).
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The more you speed up moving the micro:bit in this direction,
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the taller the lines in the bar graph will be,
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until they are as tall as the parameter `high` says they can be.
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```blocks
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basic.forever(() => {
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let a = input.acceleration(Dimension.X);
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led.plotBarGraph(a, 1023)
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})
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```
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### See also
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[brightness](/reference/led/brightness), [fade in](/reference/led/fade-in), [fade out](/reference/led/fade-out), [LED screen](/device/screen), [stop animation](/reference/led/stop-animation)
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