@dickyindra/klinecharts/lib/technicalindicator/momentum/psychologicalLine.js

Lightweight k-line chart built with html5 canvas

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

/**
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at

 * http://www.apache.org/licenses/LICENSE-2.0

 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * PSY
 * 公式：PSY=N日内的上涨天数/N×100%。
 */
var _default = {
  name: 'PSY',
  shortName: 'PSY',
  calcParams: [12, 6],
  plots: [{
    key: 'psy',
    title: 'PSY: ',
    type: 'line'
  }, {
    key: 'maPsy',
    title: 'MAPSY: ',
    type: 'line'
  }],
  calcTechnicalIndicator: function calcTechnicalIndicator(dataList, _ref) {
    var params = _ref.params;
    var upCount = 0;
    var psySum = 0;
    var upList = [];
    var result = [];
    dataList.forEach(function (kLineData, i) {
      var psy = {};
      var preClose = (dataList[i - 1] || kLineData).close;
      var upFlag = kLineData.close - preClose > 0 ? 1 : 0;
      upList.push(upFlag);
      upCount += upFlag;

      if (i >= params[0] - 1) {
        psy.psy = upCount / params[0] * 100;
        psySum += psy.psy;

        if (i >= params[0] + params[1] - 2) {
          psy.maPsy = psySum / params[1];
          psySum -= result[i - (params[1] - 1)].psy;
        }

        upCount -= upList[i - (params[0] - 1)];
      }

      result.push(psy);
    });
    return result;
  }
};
exports.default = _default;