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      将数据点动态添加到人力车图

      时间:2024-04-18
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                本文介绍了将数据点动态添加到人力车图的处理方法,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跟版网的小编来一起学习吧!

                问题描述

                所以我正在使用 Rickshaw 图形库,我想知道如何动态添加点图表.

                So I'm using the Rickshaw graphing library and I was wondering how to dynamically add points to a graph.

                我有一个像这样实例化的图表:

                I have a graph instantiated like this:

                        @seriesData = [ [], [], [] ]
                        random = new Rickshaw.Fixtures.RandomData(150)
                
                
                        for (var i = 0; i < 50; i++) {
                            random.addData(self.seriesData)
                        }
                
                
                        @graph = new Rickshaw.Graph(
                            element: document.getElementById("chart")
                            width: 550
                            height: 300
                            renderer: 'area'
                            series: [
                                {
                                    color: "#c05020"
                                    data: self.seriesData[0]
                                    name: 'One'
                                }, {
                                    color: "#30c020"
                                    data: self.seriesData[1]
                                    name: 'Two'
                                }, {
                                    color: "#2791d7"
                                    data: self.seriesData[2]
                                    name: 'Three'
                                }
                            ]
                        )
                
                        @graph.render()
                
                        hoverDetail = new Rickshaw.Graph.HoverDetail(
                            graph: self.graph
                        )
                
                        legend = new Rickshaw.Graph.Legend(
                            graph: self.graph
                            element: document.getElementById('legend')
                
                        )
                
                        shelving = new Rickshaw.Graph.Behavior.Series.Toggle(
                            graph: self.graph
                            legend: legend
                        )
                
                        axes = new Rickshaw.Graph.Axis.Time(
                            graph: self.graph
                        )
                        axes.render()
                

                我有这样的数据通过 socket.io 进入:

                And I have data coming in through socket.io like this:

                    app.on('data',
                        (one, two, three) =>
                            // Dynamically add data points to graph
                    )
                

                我想知道如何将这三个点附加到图表中.我找不到这个库的任何好的文档.我知道它建立在 d3.js 之上,但我不确定如何将这些方法合并到我的图表中.

                And I was wondering how to append these three points to the graph. I can't find any good documentation for this library. I know it's built on top of d3.js, but I'm not sure how to incorporate these methods into my graph.

                任何帮助将不胜感激.

                推荐答案

                我设想了两种可以解决您的问题的方案:

                I envision two scenario that could solve your question:

                • 使用固定窗口系列流式数据
                • 利用 javascript 中的数组通过引用传递这一事实.这里
                • 提供了一个演示
                • Using the fixed Window Series for Streaming Data
                • leveraging the fact that arrays in javascript are passed by reference. A demo is available here

                .

                var data = [
                        {
                            data: [ { x: 0, y: 120 }, { x: 1, y: 890 }, { x: 2, y: 38 }, { x: 3, y: 70 }, { x: 4, y: 32 } ],
                            color: "#c05020"
                        }, {
                            data: [ { x: 0, y: 80 }, { x: 1, y: 200 }, { x: 2, y: 100 }, { x: 3, y: 520 }, { x: 4, y: 133 } ],
                            color: "#30c020"
                        }
                ];
                
                
                var graph = new Rickshaw.Graph( {
                    element: document.getElementById("chart"),
                    renderer: 'line',
                    height: 300,
                    width: 800,
                    series: data
                } );
                
                var y_ticks = new Rickshaw.Graph.Axis.Y( {
                    graph: graph,
                    orientation: 'left',
                    tickFormat: Rickshaw.Fixtures.Number.formatKMBT,
                    element: document.getElementById('y_axis'),
                } );
                
                graph.render();
                
                
                $('button#add').click(function() {
                    data.push({
                            data: [ { x: 0, y: 200 }, { x: 1, y: 390 }, { x: 2, y: 1000 }, { x: 3, y: 200 }, { x: 4, y: 230 } ],
                            color: "#6060c0"
                    });
                    graph.update();
                });
                

                这篇关于将数据点动态添加到人力车图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跟版网!

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