@formant/ava/lib/insight/utils/common.js

A framework for automated visual analytics.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.rank = exports.unique = exports.sign = void 0;
var lodash_1 = require("lodash");
// sign
function sign(value) {
    if (value > 0)
        return 1;
    return value < 0 ? -1 : 0;
}
exports.sign = sign;
// unique
function unique(arr) {
    var sorted = arr.slice().sort();
    var uniqArr = [sorted[0]];
    var countArr = [1];
    for (var i = 1; i < sorted.length; i += 1) {
        if (sorted[i] !== uniqArr[uniqArr.length - 1]) {
            uniqArr.push(sorted[i]);
            countArr.push(1);
        }
        else {
            countArr[countArr.length - 1] += 1;
        }
    }
    return [uniqArr, countArr];
}
exports.unique = unique;
// rank
function rank(arr) {
    var sorted = arr.slice().sort();
    var rank = [];
    for (var i = 0; i < arr.length; i += 1) {
        var value = arr[i];
        var firstRank = sorted.indexOf(value) + 1;
        var lastRank = (0, lodash_1.lastIndexOf)(sorted, value) + 1;
        rank.push(firstRank === lastRank ? firstRank : (firstRank + lastRank) / 2);
    }
    return rank;
}
exports.rank = rank;