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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63 lines
1.8 KiB
63 lines
1.8 KiB
4 years ago
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ndarray-linear-interpolate
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==========================
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Multilinear (ie [bilinear](http://en.wikipedia.org/wiki/Bilinear_interpolation)/[trilinear](http://en.wikipedia.org/wiki/Trilinear_interpolation)) interpolation for ndarrays.
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Example
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=======
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```javascript
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var ndarray = require("ndarray")
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var interp = require("ndarray-linear-interpolate")
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var x = ndarray(new Float32Array(9), [3, 3])
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x.set(1, 1, 1.0)
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for(var u=0.0, u<=3.0; u+=0.25) {
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var row = []
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for(var v=0.0; v<=3.0; v+=0.25) {
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row.push(interp(x, u, v))
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}
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console.log(row.join(" "))
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}
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//Prints out:
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//
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// 0 0 0 0 0 0 0 0 0 0 0 0 0
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// 0 0.0625 0.125 0.1875 0.25 0.1875 0.125 0.0625 0 0 0 0 0
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// 0 0.125 0.25 0.375 0.5 0.375 0.25 0.125 0 0 0 0 0
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// 0 0.1875 0.375 0.5625 0.75 0.5625 0.375 0.1875 0 0 0 0 0
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// 0 0.25 0.5 0.75 1 0.75 0.5 0.25 0 0 0 0 0
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// 0 0.1875 0.375 0.5625 0.75 0.5625 0.375 0.1875 0 0 0 0 0
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// 0 0.125 0.25 0.375 0.5 0.375 0.25 0.125 0 0 0 0 0
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// 0 0.0625 0.125 0.1875 0.25 0.1875 0.125 0.0625 0 0 0 0 0
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// 0 0 0 0 0 0 0 0 0 0 0 0 0
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// 0 0 0 0 0 0 0 0 0 0 0 0 0
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// 0 0 0 0 0 0 0 0 0 0 0 0 0
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// 0 0 0 0 0 0 0 0 0 0 0 0 0
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// 0 0 0 0 0 0 0 0 0 0 0 0 0
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//
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```
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# Install
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npm install ndarray-linear-interpolate
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### `require("ndarray-linear-interpolate")(array, x, y, z, ...)`
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Interpolates values on an ndarray.
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* `array` the array to interpolate from
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* `x, y, z...` the coordinate to evaluate the interpolated grid at
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**Returns** The multilinearly interpolated value
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**Note** To avoid the overhead of variable arguments, special interfaces are available for 1, 2 and 3 dimensions. You can access these using:
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* `require("ndarray-linear-interpolate").d1`
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* `require("ndarray-linear-interpolate").d2`
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* `require("ndarray-linear-interpolate").d3`
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# Credits
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(c) 2013 Mikola Lysenko. MIT License
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