npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

@cssc-ment/vector-scalar

v0.0.3

Published

强度场、矢量场

Downloads

12

Readme

@cssc-ment/vector-scalar

地图强度场、风场绘制

用法

const map = L.map('map', {
  // crs: CRS_4326,
  crs: L.CRS.EPSG3857,
  // 不添加属性说明控件
  attributionControl: false,
  //显示中心
  center: [29.169907662611103, 122.30475884137897],
  //最小显示等级
  // minZoom: 3,
  // //最大显示等级
  // maxZoom: 18,
  //当前显示等级
  zoom: 11,
  zoomControl: false,
  doubleClickZoom: false,
  renderer: L.canvas(),
  // //限制显示地理范围
  // maxBounds: [[-90, -180], [90, 180]],
  preferCanvas: true,
});
L.tileLayer(mapConfig.baseLayer).addTo(this.map);
const tagLayer = new L.FeatureGroup().addTo(this.map);
map.setView([28.357778, 121.656389], 11);


// 强度场、风场的数据是一致的
// 数据格式
import {windData} from 'mock/windDta.ts'
// 色卡 用于强度场的色系
let colorScale: Array<[number, number[]]> = [
      [-22.7, [0, 2, 205]],
      [-14.2, [95, 180, 255]],
      [-5.6, [169, 243, 255]],
      [-1.8, [222, 253, 255]],
      [2.9, [255, 235, 1]],
      [11.5, [255, 54, 0]],
      [20, [147, 0, 0]],
    ];

const vectorScalar=new VectorScalar(this.map,colorScale)
vectorScalar.loadVelocityLayer(windData)

//强度场点击事件,需要包裹一层setTimeout
const clickFun=(e)=>{
 const content = e.split('|');
          setTimeout(() => {
            L.tooltip()
              .setLatLng([content[2] * 1, content[1] * 1])
              .setContent(
                `海温:${Math.abs(content[0]).toFixed(6)} ℃<br />经度:${(content[1] * 1).toFixed(
                  6,
                )}<br />纬度:${(content[2] * 1).toFixed(6)}`,
              )
              .addTo(this.map);
          }, 10);
}
vectorScalar.loadScalarLayer(windData,clickFun)

//动态化显示当前强度场的强度色卡
const currentColor=vectorScalar.getColorScale()

 <div v-if="currentColor.length > 0" style=" position: absolute;z-index: 500;">
    <div
      v-for="(i, index) in currentColor"
      :key="index"
      class="color-block"
      :style="{ background: `linear-gradient(to right, ${i[1]}, ${i[2]}` }"
    >
      <span>{{ i[0] }}</span>
    </div>
  </div>

API

Class vectorScalar

构造函数

| 参数 | 类型 | 说明 | 是否必填 | | ---------- | ------------------------- | ------------------ | -------- | | map | leafletjs.Map | leafletjs Map 对象 | 是 | | colorScale | Array<[number, number[]]> | 色卡 | 否 |

loadScalarLayer

| 参数 | 类型 | 说明 | 是否必填 | | ---- | -------- | -------- | -------- | | data | gribJson | 强度数据 | 是 |

loadVelocityLayer

| 参数 | 类型 | 说明 | 是否必填 | | ---- | -------- | -------- | -------- | | data | gribJson | 矢量数据 | 是 |


type gribJson = {
  data: number[];
  header: Record<string, any>;
};

风场(矢量场)是有俩个方向的数据  数据格式:
const windData=[
  {
    header: {
        parameterCategory: 1, //固定写死
        parameterNumber: 2, //固定写死
        refTime: 1514908800, ////写死
        nx: 101, //x轴划分多少段
        ny: 101,//y轴划分多少段
        lo1: 105.0,//起始点经纬度
        la1: 16.0,//起始点经纬度
        lo2: 130.0,//终点经纬度
        la2: 41.0,//终点经纬度
        dx: 0.25,//x轴每段距离
        dy: -0.25,//y轴每段距离
      },
      data:[]    //从左上角开始绘制到右下角,数据就是x轴的强度
  },
  {
    header: {
        parameterCategory: 1, //固定写死
        parameterNumber: 2, //固定写死
        refTime: 1514908800, ////写死
        nx: 101, //x轴划分多少段
        ny: 101,//y轴划分多少段
        lo1: 105.0,//起始点经纬度
        la1: 16.0,//起始点经纬度
        lo2: 130.0,//终点经纬度
        la2: 41.0,//终点经纬度
        dx: 0.25,//x轴每段距离
        dy: -0.25,//y轴每段距离
      },
      data:[]    //从左上角开始绘制到右下角,数据就是y轴的强度
  }
]

盐度、温度等等(强度场)是只有一个方向的数据 数据格式:
const scalarData=[

  {
    header: {
        parameterCategory: 1, //固定写死
        parameterNumber: 2, //固定写死
        refTime: 1514908800, ////写死
        nx: 101, //x轴划分多少段
        ny: 101,//y轴划分多少段
        lo1: 105.0,//起始点经纬度
        la1: 16.0,//起始点经纬度
        lo2: 130.0,//终点经纬度
        la2: 41.0,//终点经纬度
        dx: 0.25,//x轴每段距离
        dy: -0.25,//y轴每段距离
      },
      data:[]    //从左上角开始绘制到右下角,数据就是每个点的强度
  }
]

type MarkerTag = Pick<Rect, 'lng' | 'lat' | 'mmsi'> & { name: string };