StackGenVis: Alignment of Data, Algorithms, and Models for Stacking Ensemble Learning Using Performance Metrics
https://doi.org/10.1109/TVCG.2020.3030352
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85 lines
1.9 KiB
85 lines
1.9 KiB
# μMath [](https://travis-ci.org/dfcreative/mumath) [](https://codeclimate.com/github/dfcreative/mumath) <a href="UNLICENSE"><img src="http://upload.wikimedia.org/wikipedia/commons/6/62/PD-icon.svg" width="20"/></a>
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Set of practical math utils to shorten code.
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[`$ npm install mumath`](https://npmjs.org/package/mumath)
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```js
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var round = require('mumath/round');
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round(123.32, .5); //123.5
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//require any function as
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//var <fn> = require('mumath/<fn>');
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```
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## API
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### `round(value, step?)`
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Rounds value to optional `step`.
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`round(0.3, .5)` → `.5`
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### `len(a, b)`
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Return length of a vector.
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### `precision(value)`
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Get precision from float:
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`1.1 → 1, 1234 → 0, .1234 → 4`
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### `clamp(value, left, right)`
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Return value clamped by left/right limits (or vice-versa).
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### `lerp(x, y, ratio)`
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Return value interpolated between x and y.
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### `within(value, left, right)`
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Whether element is between left & right, including.
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### `mod(value, min?, max)`
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An enhanced [mod-loop](http://npmjs.org/package/mod-loop) — loops value within a frame.
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### `closest(value, list)`
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Get closest value out of a set.
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### `scale(value, list)`
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Get first scale out of a list of basic scales, aligned to the power. E. g.
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`step(.37, [1, 2, 5])` → `.5`
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`step(456, [1, 2])` → `1000`
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Similar to closest, but takes all possible powers of scales.
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### `order(value)`
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Get order of magnitude for a number.
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`order(123) → 100; order(-0.0003) → 0.0001;`
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### `isMultiple(a, b, eps?)`
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Same as `a % b === 0`, but with precision check.
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## Related
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* [bit-twiddle](https://www.npmjs.com/package/bit-twiddle) — utils for power-of-two numbers.
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* [pretty-number](https://www.npmjs.com/package/pretty-number) — format number to pretty view.
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