Use the echart pie chart to pass the time ., Echart pie pass time
The new company has just been idle for a few days. The leaders asked me to do some irrelevant work and optimize the report statistics !!! Previously, flash was used. Now we need to change it to echart. Well, I have never used it before. I studied it with my learning attitude. Writing something to p
In the recent example of the Echart bus line direction, the development of the drainage network and sewage network to map, at the same time the map needs to overlay the discharge, pollution sources, sewage treatment plants and other elements. Since no previous use of Echart, especially Echart map function, pondering the trial for a long time, finally understand t
Objective: To collect data from Plc to database and draw real-time dynamic curve with Echart.
1 ideas
-Django performs tasks periodically, pushing data to Echart.
-the front-end reads the back-end data periodically and displays it on the Echart.
The first way of thinking seems to be out of line, mainly consider the second approach.
The second way to think first i
the entire page loading speed, need to optimize words can use Webpack to package them, this interested can go down to understand. For angular, the project automatically generates a scope, and the first thing we do when you want to use other standalone plug-ins in the angular project is to introduce the plugin into the scope of the angular, So in the project I created a factory to pass Echart into the scope of angular
. Factory (' Echarts ', f
When Echart is used in IE, the chart is not displayed after adding postion in the div. The main problem is that Echart adds a filter to the DIV after compiling, which hides the Div,Modify the method, of course, is deleted, one is to find Echart source files to modify the bug, this is too much to find, two is the picture after the completion of the load to delete
Detailed explanation of how angularjs implements the most concise tutorial on echart chart effects, angularjsechart
This article describes how angularjs implements the most concise tutorial on the effect of echart charts. The details are as follows:
Ehcart is a data chart made by Baidu Based on native js. Both interfaces and configurations are easy to read and can be used for commercial use.
Recently do the project want to overlay on the Baidu map display Echart scatter chart, and then according to the map zoom level and area range to display different scatter plot, this middle toss for a long time. Functional requirements include: (1) Basemap using Baidu Map, (2) can be superimposed on the map display Echart scatter chart, (3) the mouse moved to the above scatter chart, you can float to displa
When echart is used in IE, the chart is not displayed after postion is added to div. echartpostion
When echart is used in IE, It is not displayed after postion is added to div. The main problem is that after echart is compiled, the filter is added to the div to hide the div,
If the modification method is used, delete the file. First, locate the source file o
Ideas:
The Echart Waterfall chart is used to achieve the comparison between planned and actual progress, showing differences and durations. The Gantt chart uses the Echart layout because the timeline is poorly tuned and not good-looking.
The company just wants to focus on the main link, hoping one screen can see the information I want, so I think of fixing the time in 6-8 sections (because the project will
FrontEnd is a step-by-step upgrade: Echart Quick Start ~, Frontendechart
Introduce echart
Of course, there are three ways to introduce the official document: Click here to me ~
Officially, the script tag should be placed at the end of the body. If you want to put it in the head, no problem.
Register the initialization function in window. onload:
window.onload = init;function init() { initChart();}
();/** * @param res * @return * Stack map */@RequestMapping ("Stackyear") pu Blic string Stackyear (httpservletrequest res) {//Invokes a function of the service layer and saves the return value of option option=ech.stackyear ();//convert JSON to string strings Opt =json.tojsonstring (option);//Pass object to JSP page res.setattribute ("option", opt); return "/ec";}}4.jsp page Code:ec.jsp5. After the successful operation of the page source code:Reference website: http://git.oschina.net/free/ECha
In the website development, may use the line chart, the pie chart, and so on to enrich the webpage to the data display, may use the EchartHttp://echarts.baidu.com/tutorial.html#5%20%E5%88%86%E9%92%9F%E4%B8%8A%E6%89%8B%20ECharts can refer to this URL to get started quickly CharSet="Utf-8"> Echarts Id="Main" Style="Width: 600px;Height:400px;"> Can quickly come out of a bar chartThis is what I use this You can modify the style of the icon by using the parameter configurationoption
Use Echarts to show cities in the series section of the map if you return data with JSON, JS cannot be used directly with strings. Need to deal with it.The data returned by some JSON in PHP JS to get the JSON information with AJAX implementation callBecause the format of the display city in the Echarts chart map is [{name: ' Beijing '},{name: ' Tianjin '}] first the array is then the object form, but JS does not support string format data, so we use JS in the array () and object () Deal with it
Echart1.4.1If it is the latest 2.2.7, you can refer to the website provided by Http://echarts.baidu.com/doc/example/bar15.htmlIf it is 1.4.1, then if the function (params) is written in color, the params does not have so many parameters to the 2.2.7, and if the color changes with the value, this can be donevar Zrcolor = require (' Zrender/tool/color ');var colorno=0;//set Column chart function Setcolumnchart (x_value,y_value,colorbegin,colorend) {option_column.xaxis[0].data=x_ value;option_colum
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