udacity d3

A short time to study the social members of the network diagram of some visual display, the big data visualization of this desert helpless self, fortunately found D3 this vibrant oasis. I decided to have a greedy meal in this treasure-place.This article introduces mainly from the official website translation and the user impression data collection after useD3.js is a JavaScript library that manipulates data (primarily for big data) for visualization.

A server to do mobile app application in a cloud, very curious if you do not modify the SSH port, how many times a day will be violently cracked? With this question, look at the/var/log/messages log, grep How many of the "Failed" in the log records ...Because the messages log will have logrotate, so:grep "^mar 1"/var/log/messages* |grep "Failed" | Wc-lGet the number of violent hacks from 1th to 7th respectively this month, respectively:2015-03-07,41262015-03-06,334992015-03-05,800962015-03-04,70

Recently, we have been studying some visualization of the network diagram of the social members, visualizing the big data this desert helpless himself, fortunately found D3 this vibrant oasis, I decided to be greedy in this treasure to feast.This article introduces mainly from the official website translation and the user impression data collection after useD3.js is a JavaScript library that manipulates data (primarily for big data) for visualization.

First, the chart interactive operationInteraction with a chart means that one or more listeners are set on a graphic element and react accordingly when the event occurs.Interaction, refers to the user has entered some kind of instruction, the program accepts the instruction must make some kind of response. For visual charts, interaction can make a chart more vivid and more expressive. For example, drag some of the graphics in the chart, slide the mouse over the graphic to appear, zoom in or out

The scale is a very important concept in D3. It is not a good way to use the size of a numeric value to represent pixels directly when drawing a drawing, and this chapter is about solving this problem.first, why need scaleThe previous chapter produced a column chart with an array that, when plotted, directly assigns a value of 250 to the width of the rectangle, that is, the width of the rectangle is 250 pixels. This approach is very limited if the val

A few days ago to see someone in the community posted a comparison of three more mainstream chart plug-ins, we all have a heightcharts love, but no good director of personal hobbies D3 more, so my chart for the first time so gave D3This is a chart I made with d3+react, but because of the extensibility is not very good, do not stick to the source code.http://yansm.github.io/react-

The charm of dynamic visual data visualization D3,processing,pandas data analysis, scientific calculation package NumPy, visual package Matplotlib,matlab language visualization work, matlab No pointers and references is a big problemD3.js Getting Started GuideWhat is D3?D3 refers to a data-driven document (Data-driven documents),According to the official definiti

The relationship between the selection set and the data is the most important foundation of D3, in the "Getting Started-7th chapter" When a little explanation, for to master good D3 is not enough. Therefore, a new classification is devoted to the relationship between the selection set and the data, including the use and working principles of data binding, the principle of update, enter, exit, and how to use

Data Visualization and D3.jsData Visualization Data visualization is a topic for how to better present data. After the emergence of big data, it becomes more important and urgent. Previously, using excel for column charts, pie charts, and line charts was one of the most commonly used data visualization methods. On the WEB end, the popular extjs, fusioncharts, and jfreechart were used, or the relatively less popular plug-ins such as amchart, highcharts

My personal blog is: www.ourd3js.comCSDN Blog for: blog.csdn.net/lzhlzzReprint please indicate the source, thank you.A very important concept was used in the previous section-scale ( This does not know what to translate into, let's call it proportions ). This section will focus on how it is used.Before introducing scale, let's introduce two functions that appear together with the scale, and also appear in the previous section. D3.max ()

1. Basic commands for loading dataD3 provides methods to load different data types, such as D3.text (), D3.xml (), D3.json (), D3.csv (), and d3.html ().DOCTYPE HTML>Head> Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8" /> title>Testtitle> Scr

This article introduces to you about how to use CSS and D3 to achieve the dynamic effect of spacecraft, there is a certain reference value, the need for friends can refer to, I hope to help you. Effect Preview Code interpretation Defines the DOM, which spacecraft represents the spaceship, containing 1 elements that represent the tail-ji fins : Center display: body { margin:0; HEIGHT:100VH; Display:flex; Align-items:center; Justify-co

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/46/4A/wKiom1Pxo2TBRWeLAA0OnoUKaoE309.jpg "title=" A20133925.jpg "alt=" Wkiom1pxo2tbrwelaa0onoukaoe309.jpg "/>Content SummaryToday, the Internet era, people produce a huge amount of data every day, if directly facing these data, it may be impossible to do. Visualizing the data and showing it in the form of a three-dimensional image is useful for analyzing the correlations and seizing possible business opportunities. The book intends to sh

In the "Getting Started-10th chapter" made a map of China, in which the color values of the provinces are randomly assigned values. If you want to reflect some values on the map, you can use the color changes to represent the change in values.1. IdeasFor example, a range of domains is:[10, 500]It is hoped that 10 with light green, 500 with dark green, 10 to 500 between the value of light green and dark green between the color expression. Obviously, a function is needed here, the passed-in parame

Drag-and-drop (Drag) is an important part of interactivity, and this article explains how to use it.1. Definition of dragD3.behavior.drag () can be used in D3 to define drag behavior.var drag = D3.behavior.drag (). On ("Drag", DragMove); function DragMove (d) {d3.select (this) . attr ("cx", d.cx = d3.event.x) . attr

Using D3 to draw a chart can make your data more intuitive.Before using D3 to load the D3 library, there are two ways, one is the online loading Another is to download D3 library, I am directly inside Baidu search "D3 js download" and then download, after downloading into t

The previous one is the drawing of the curve, so that only there is a line, completely not the data want to show the content, so we want to add coordinate system, add coordinate system and draw line similar.1. Still no change in HTML pageDOCTYPE HTML>HTML> Head> MetaCharSet= "Utf-8" /> title>title> Linkrel= "stylesheet"href= "Css/style.css" /> Head> Body> DivID= "Container">Div> Body> Scripttype= "Text/javascript"src= "Js/