d3.js | 易学教程

d3.js trying to animate data, but changed data always treated as new

阅读更多关于 d3.js trying to animate data, but changed data always treated as new

问题 I have json data: an array of frames, each frame is an array of 10 nodes, and each node is a dictionary with the node id and x,y coordinates. I want to create a d3 animation that transitions between the positions of the node in each frame. I am using setInterval(...) to set up the transitions to the next set of node positions. However, a bunch of new nodes are added instead of the existing nodes updating by going through the transition. Am I doing something wrong with the key function, or

d3 setinterval animate text and remove image on button click

阅读更多关于 d3 setinterval animate text and remove image on button click

问题 Hi I have a click button event to start a setinterval / clear interval animation of some text and to also add an image on a button click. I would like help in how to better stop and remove the animating text and remove the image when a new button is clicked. At the moment the text is replaced by an empty string when the array ends. the image just duplicates each time I click the button. I have looked at examples that use exit().remove() or merge but I can't work out how to apply it in my case

崛起于SpringBoot2.X + 集成Neo4j图形数据库（70）

阅读更多关于崛起于SpringBoot2.X + 集成Neo4j图形数据库（70）

【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 《SpringBoot2.X心法总纲》码云地址： https://gitee.com/mdxl/blog.git 提前安装好neo4j，使用Springboot2.1.5版本 1、依赖添加 <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-neo4j</artifactId> </dependency> 2、配置文件 server.port=8084 #neo4j spring.data.neo4j.uri=bolt://localhost:7687 spring.data.neo4j.username=neo4j spring.data.neo4j.password=76521 3、配置类 import org.neo4j.driver.v1.AuthTokens; import org.neo4j.driver.v1.Driver

On button click open a new window and draw a circle with D3

阅读更多关于 On button click open a new window and draw a circle with D3

问题 I'm trying to open a new window on button click and draw a simple circle on it. I can open a window but circle won't appear on it with this code. Any ideas on how to solve this.0 Here is my code: function drawBarChart(newWindowRoot){ var sampleSVG = d3.select(newWindowRoot) .append("svg") .attr("width", 100) .attr("height", 100); sampleSVG.append("circle") .style("stroke", "gray") .style("fill", "white") .attr("r", 40) .attr("cx", 50) .attr("cy", 50) .on("mouseover", function(){d3.select(this

On button click open a new window and draw a circle with D3

阅读更多关于 On button click open a new window and draw a circle with D3

set multiple attributes in D3 without knowing what they are going to be ahead of time

阅读更多关于 set multiple attributes in D3 without knowing what they are going to be ahead of time

问题 I am tying to set multiple attributes in d3 similar to what is done in this answer: https://stackoverflow.com/a/20822552/1112097, but I want to be able to pass a set of attributes in as an array so that the same code can create different elements. For example, the following data should create a red square and a green circle: var data = [ { name: "Element 1", type: “rect”, id: “rect01”, attributes: [ {label: “x”, val: 0}, {label: “y”, val: 0}, {label: “width”, val: 10}, {label: “height”, val:

D3 X-value mouseover - function returns NaN

阅读更多关于 D3 X-value mouseover - function returns NaN

问题 So I am trying to adapt M Bostock's x-value mouseover example to my own graph, the main difference being that I have multiple series instead of his one. For the moment I'm just trying to get the circles to work. My problem is that when I mouseover the graph (in Firebug) I get the message: Unexpected value translate(<my_x>, NaN) parsing transform attribute . I've tried several different ways to fix it but I get the same response each time. What am I doing wrong? I have a jsFiddle, and the

D3 X-value mouseover - function returns NaN

阅读更多关于 D3 X-value mouseover - function returns NaN

D3 Table Example with Array of Arrays Yields Empty TD Tags

阅读更多关于 D3 Table Example with Array of Arrays Yields Empty TD Tags

问题 I am trying to create a table with d3.js following this example. Namely this is the code I am using var table = d3.select("#myTableDiv").append("table") .attr("style", "margin-left: 0px"), thead = table.append("thead"), tbody = table.append("tbody"); // append the header row thead.append("tr") .selectAll("th") .data(columns) .enter() .append("th") .text(function(column) { return column; }); // create a row for each object in the data var rows = tbody.selectAll("tr") .data(data) .enter()

X,Y domain data-binding in multiple grouped bar charts in d3.js

阅读更多关于 X,Y domain data-binding in multiple grouped bar charts in d3.js

问题 Fiddle Example I have been following these two examples (1)(2) to create small multiple grouped bar charts on the same page. Here's a JSON data example: var data = [ {"name":"AA","sales_price":20,"retail_price":25}, {"name":"BB","sales_price":30,"retail_price":45}, {"name":"CC","sales_price":10,"retail_price":55}, {"name":"DD","sales_price":10,"retail_price":25}, {"name":"EE","sales_price":13,"retail_price":20}, {"name":"GG","sales_price":13,"retail_price":15}, ]; I've managed to get the bar