更新记录

1.0.1（2023-11-12）

增加一个多维向量数据重采样接口；

1.0.0（2023-11-12）

发布第一个版本，包含一个一维数据重采样接口；

平台兼容性

xuhua-dataLib

开发文档

1 使用方法

1.1 引入及调用

import * as xuhua_dataLib from "@/uni_modules/xuhua-dataLib"

//一维数据重采样（非线性插值）
var data = [1, 2, 1];

console.log("5 => ", xuhua_dataLib.ResamplePoints1D(data, 5));
console.log("4 => ", xuhua_dataLib.ResamplePoints1D(data, 4));
console.log("3 => ", xuhua_dataLib.ResamplePoints1D(data, 3));
console.log("2 => ", xuhua_dataLib.ResamplePoints1D(data, 2));
console.log("1 => ", xuhua_dataLib.ResamplePoints1D(data, 1));
console.log("0 => ", xuhua_dataLib.ResamplePoints1D(data, 0));

//多维数据重采样（非线性插值）
const data = [ [1, 1, 1], [2, 2, 2], [3, 1, 1] ];

console.log("5 => ", xuhua_dataLib.ResamplePointsND(data, 5));
console.log("4 => ", xuhua_dataLib.ResamplePointsND(data, 4));
console.log("3 => ", xuhua_dataLib.ResamplePointsND(data, 3));
console.log("2 => ", xuhua_dataLib.ResamplePointsND(data, 2));
console.log("1 => ", xuhua_dataLib.ResamplePointsND(data, 1));
console.log("0 => ", xuhua_dataLib.ResamplePointsND(data, 0));

1.2 运行结果

//一维数据重采样结果（非线性插值）
5 => [1, 1.5625, 2, 1.5625, 1]
4 => [1, 1.7777777777777777, 1.777777777777778, 1]
3 => [1, 2, 1]
2 => [1, 1]
1 => [2]
0 => []

//多维数据重采样结果（非线性插值）
5 => [[1,1,1], [1.4375,1.5625,1.5625], [2,2,2],[2.5625,1.5625,1.5625],[3,1,1]]
4 => [[1,1,1], 
      [1.6296296296296295,1.7777777777777777,1.7777777777777777],
      [2.3703703703703702, 1.777777777777778, 1.777777777777778],
      [3,1,1]]
3 => [[1,1,1], [2,2,2], [3,1,1]]
2 => [[1,1,1], [3,1,1]]
1 => [[2,2,2]]
0 => [] 

1.3 空数据重采样填充{0}

const data01 = [];

console.log("2 => ", xuhua_dataLib.ResamplePoints1D(data01, 2));
console.log("1 => ", xuhua_dataLib.ResamplePoints1D(data01, 1));
console.log("0 => ", xuhua_dataLib.ResamplePoints1D(data01, 0));

运行结果：

2 => [0, 0]
1 => [0]
0 => []

1.3 单数据重采样填充{原值}

const data02 = [99];

console.log("2 => ", xuhua_dataLib.ResamplePoints1D(data02, 2));
console.log("1 => ", xuhua_dataLib.ResamplePoints1D(data02, 1));
console.log("0 => ", xuhua_dataLib.ResamplePoints1D(data02, 0));

运行结果：

2 => [99, 99]
1 => [99]
0 => []

2 接口说明

2.1 数据重采样

function ResamplePoints1D(data: Array<number>, sampleCount: number): Array<number>

说明：
    一维数据重采样，使用非线性插值

function ResamplePointsND(data: Array<Array<number>>, sampleCount: number): Array<Array<number>>

说明：
    支持多维向量数据重采样，使用非线性插值