本文介绍了如何使用D3js在不同时间绘制圆圈?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

使用d3js,我需要绘制(附加)圆圈,而不是全部,但距离要小于一秒.因此,0.5秒钟后,在x位置一个圆圈,在y位置另一个圆圈.

Using d3js, I need to draw(append) circles, not all together but with less then one second of distance. So one circle in x position, another one in y position after 0.5 second.

推荐答案

使用setTimeout.这是工作代码段.

Use setTimeout. Here is the working code snippet.

var nodes = [{
        "name": "6",
        "x": 207,
        "y": 305
    }, {
        "name": "7",
        "x": 404,
        "y": 310
    }, {
        "name": "8",
        "x": 420,
        "y": 510
    }, {
        "name": "9",
        "x": 540,
        "y": 126
    }, {
        "name": "10",
        "x": 350,
        "y": 150
    }, {
        "name": "11",
        "x": 177,
        "y": 320
    }, {
        "name": "12",
        "x": 200,
        "y": 190
    }, {
        "name": "13",
        "x": 170,
        "y": 150
    }, {
        "name": "14",
        "x": 107,
        "y": 510
    }, {
        "name": "15",
        "x": 104,
        "y": 150
    }, {
        "name": "16",
        "x": 104,
        "y": 150
    }, {
        "name": "17",      
        "x": 310,
        "y": 160
    }, {
        "name": "18",      
        "x": 120,
        "y": 110
    }, {
        "name": "19",
        "x": 619,
        "y": 145
    }, {
        "name": "20",
        "x": 148,
        "y": 107
    }, {
        "name": "21",
        "x": 575,
        "y": 107
    }];


var width = 500,
    height = 400;

var color = d3.scale.category20();

var svg = d3.select("#map").append("svg")
    .attr("width", width)
    .attr("height", height);

nodes.forEach(function(d, i) {
    setTimeout(function() {
        svg.append("circle")
            .datum(d)
            .attr("class", "node")
            .attr("cx", function(d) {
                return d.x;
            })
            .attr("cy", function(d) {
                return d.y;
            })                 
            .attr("r", "10")
            .style("fill", function(d) {
                return color(i);
            });               
    }, 500 * i);
});
.node {
  stroke: #fff;
  stroke-width: 1.5px;
}

.overlay {
  fill: none;
  pointer-events: all;
}

#map{
    border: 2px #555 dashed;
    width:500px;
    height:400px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
<body>
    <div id="map"></div>
</body>

这篇关于如何使用D3js在不同时间绘制圆圈?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

10-12 18:06