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The size of the circle should be mapped to its area, not its radius(圆形尺寸应该映射为面积而非半径) #2716
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确实应该映射为面积,这里 point 映射 size 通道,应该将 sqrt(size) 作为半径 |
3 tasks
是的,我是这想法。 |
可以,如果没有反对意见,我们就这么搞吧! |
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What problem does this feature solve?
"The human visual system naturally experiences a disk's size in terms of its area. And the area of a disk—unlike its diameter or circumference—is not proportional to its radius, but to the square of the radius. So if one chooses to scale the disks' radii to the third data values directly, then the apparent size differences among the disks will be non-linear (quadratic) and misleading. To get a properly weighted scale, one must scale each disk's radius to the square root of the corresponding data value "
quoted from https://en.wikipedia.org/wiki/Bubble_chart
What does the proposed API look like?
The api does not need to be changed, it is recommended to modify the internal logic
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