d3 nest

If you are interested in D3.js or data visualization, welcome to www.ourd3js.com for discussion. Next I will discuss how to select elements and use data.The page now contains three lines of text with the code: Hello World 1Hello World 2Hello World 3 Defines a set with three elements: var set = ["I like dog","I like cat","I like snake"]; Use these three strings to give the preceding three strings respectively. The Code is as follows: Var sp =

1. The difference between select and SelectAllIn D3, there are two functions for selecting an element: Select and SelectAll, which are very important to use. Let's start by explaining their differences:Select is the first selection of all specified elementsSelectAll is the selection of all of the specified elements (for simultaneous operation)The results returned by these two functions are called selection sets.To see a specific example, the following

My personal blog homepage is: http://www.ourd3js.com/. CSDN Blog Home for: http://blog.csdn.net/lzhlzz/. Reprint please indicate the source. Thank you.Here's how to start with D3.js to deal with the first simple question, first look at the following code:Suppose you have studiedHTML, you should know that two lines of text will be printed on the screen. For example, with:Suppose you want to useJavaScriptTo change these two lines of text, what to do? We

My personal blog is: www.ourd3js.comCSDN Blog for: blog.csdn.net/lzhlzzReprint please indicate the source, thank you.Packing diagram (pack), which is used to contain the relationship to be included, also represents the weights of individual objects, usually with a round set of a circle to represent the former, the size of the circle to represent the latter.First look at the data used in this section: City2.jsonThis is the data for each city's affiliation. We are now going to use the

What is Update, Enter, Exit?Svg.selectall ("rect") //Select all the rectangles within SVG . Data (DataSet) //bound array . Enter () //Specify the Enter portion of the selection set . Append ("rect") //Add a sufficient number of rectangular elementsThis code uses the situation when the following conditions occur:Assuming that there are three P elements in the body, there is an array [3, 6, 9], you can bind each item in the array to a P element, respectively. However

p.data (persons, function (d) {return d.id;}). Text (function (d) {return d.id + ":" + D.name;});There is only one statement return d.id in the key function. Represents a key using the ID property of an array item. After modifying the contents of the P element with the data of this binding, the result is as follows:As you can see, the results are not arranged in the order of the New Persons Array (6: Zhang San, 9: John Doe, 3: Harry). As shown in binding procedure 1, the order of the bindings d

Website: http://d3js.org/Example: Https://github.com/mbostock/d3/wiki/GalleryReference: Online reference //or download to local Begin: D3.select implementing a single element selectionSelect.attr, reading/Setting element properties select.classed, adding/removing element classes Remove the P1 class for P tags　　D3.js Study 1

D3.js Data Visualization Practical Manual study notesThe interpolator interpolation a given range of values and prints it in the middle.Character interpolation var data=[];var sizescale=d3.scale.linear (). Domain ([0,9]). Range (["Italic bold 12px/30px Georgia, serif", "Italic bold 120px/180px Georgia, serif "]); for (Var i=0;iColor interpolation var data=[];var colorscale=

My personal blog is: www.ourd3js.comCSDN Blog for: blog.csdn.net/lzhlzzReprint please indicate the source, thank you.[5.1] A better chart is produced in the section. But it is static. Want to make a dynamic effect on it? In D3, just a few lines of code are needed.This section will cover the use of 4 functions.1.transition ()The effect of starting the transition is just to add it.Add it between the two states. Like what:. attr ("Fill", "red"). Transiti

simplified version of GeoJSON, which can be said to be a GeoJSON child. The author of D3.js thinks GeoJSON is not very good, and it is more admired Topojson format.Topojson compared to GeoJSON, the file size is reduced by 80% because: The boundary line is recorded only once (for example, the junction lines in Guangxi and Guangdong province are recorded only once) Do not use floating-point numbers, use integers only But Topojson seem

How about the Shenzhou Tang one machine? We can learn from the following to understand the Shenzhou Tang M35 d3 Integrated machine configuration content, Shenzhou released the Tang Dynasty in one model for the M35 D3, its configuration performance? Let's get to know each other. Tang-m35 D3 equipped with Intel dual-core processor, the main frequency of 2.1

Online DemoIf you want to create a nice text cloud or tag cloud effect, you can consider using D3-cloud, which is an awesome open source font cloud effect JavaScript class library, based on the well-known d3.js, can help you generate similar wordle.com style fonts or tag cloud effects. This class library uses the HTML5 canvas to generate the font effect, and the entire layout algorithm can be implemented a

The first test of the successful D3.js code needs to be opened in the IE9 and above browsers. Firefox and Google can also try. Delete "20"rows="8"id="con">"运行代码"type="button"id="btn"/>Test the successful D3.js code

This two-part article series will demonstrate a visualization technique that helps extract information from the data that has business value, and this article is the first part of the series. You'll see how to use Scalable Vector Graphics (SVG) and open source D3 JavaScript libraries to create visual representations that can be viewed through the browser, conveying information through shapes and colors. I'll demonstrate these techniques with some exam

D3 provides 4 ways to make a transition to a graph:-Transition ()Starts the transition effect, before and after the shape changes before and after the state (shapes, positions, colors, and so on), such as:. attr ("Fill", "red") // initial color is red . Transition () // start transition . attr ("Fill", " Blue ") // End ColorD3 automatically interpolates the color values (RGB values) between the two colors (red and blue) to

() when the corresponding element is too large (the number of bound data When the corresponding element is too large, it is usually necessary to delete the element so that it is equal to the number of bound data. The back is usually followed by the remove operation.Here's a look at the specific usage:[JavaScript]View PlainCopy The above code uses the variable name update and enter respectively to represent the respective part, the result of the above code is:The resu

[D3.js getting started series-10.3] Difference and connection between GeoJSON and TopoJSON files, geojsontopojson My personal blog is: www.ourd3js.com The csdn blog is blog.csdn.net/lzhlzz. Please indicate the source for reprinting. Thank you. A friend left a message a few days ago asking about the relationship between the GeoJSON file and the TopoJSON file. I am not very clear about it. After some queries, I will sort them out as follows. I hope you

If you are interested in D3.js or data visualization, welcome to www.ourd3js.com for discussion. My blog homepage is: http://blog.csdn.net/lzhlzz, reprinted please indicate the source, thank you. In D3.js, there are two functions for selecting elements: select and selectAll. First, describe their differences: Select is the first choice for all specified elements. SelectAll is to select all the specifie

My personal blog home: http://www.ourd3js.com/, csdn Blog home for: http://blog.csdn.net/lzhlzz/.Reprint please indicate the source, thank you.In D3.js, there are two functions for selecting an element: Select and SelectAll.Let's start by explaining their differences: Select is the first selection of all specified elements SelectAll is the selection of all of the specified elements (to be used at the same time later) Consider a detai

Preface: In the blink of an eye, the internship has been nearly a week, in this period of time in contact with a lot of fresh language, learning a lot of new technology, in this summary comb, hope to have some help for other beginners, not the right place, please more adviceThe main framework of the project is node. JS Express, which uses leaflet and D3 to use jquery Ajax in database query delivery.Now the completion of the work is: equipped with the