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Posts from the ‘ExtJs 4’ Category

27
Sep

How to create HighStocks area range chart for ExtJs

Here is an example of using the Highstocks extension for ExtJs 4 to create an area range stock chart.

First, there is a minor bug in the Highstocks extension that the property name for specifying the series type is ‘series.plot‘, not ‘series.type‘. Read more »

21
Aug

Highcharts extension for Sencha v3.2.1 is here

Highcharts extension v3.2.1 is out. This release includes important performance fix (due to my crap code) and corrupt xAxis display with connectNulls option.

14
Mar

Building ExtJs/Highcharts Application with Sencha Cmd 4 Tool

Here is a blog showing you how to build application with the Highcharts extension using Sencha Cmd 4 tool. First of all, we generate ExtJs 4 application skeleton with the following command example:

~/bin/Sencha/Cmd/4.0.4.84/sencha -sdk extjs4 generate app SenchaCmd4Demo sc4demo

Next we copy (don’t use symbolic link) the whole ‘Chart’ directory into the application directory.

cd sc4demo
cp -fr {path}/{to}/Highcharts_Sencha/Chart .

Read more »

28
Feb

Building ExtJs/Highcharts Application with Sencha Cmd 5 Tool

A number of users have asked me how to build ExtJs application with my Highcharts extension using Sencha Cmd tool. I have been ignoring this question with the excuse of way too busy. Now, my new book is done and I am going to address this here. The aim of this article is to demonstrate that the extension does work with sencha command tool.

Lets start off by generating an ExtJs 5 application with the following sencha command:

sencha -sdk extjs5 generate app HighchartsSenchaDemo hcExtJsDemo

Read more »

22
Sep

Highcharts extension for Sencha ExtJs now includes Highmaps support

screen
The new release now includes Highmaps support. A new online demo is setup and the demo code is included in the new release under the directory, highmaps_demo.extjs4. Read more »

14
Sep

Highcharts extension for ExtJs 4/5 is here now

screen Highcharts Extension 3.1.0 now supports ExtJs 5. It includes couple updates:

– All demos now refer to ExtJs CDN rather than from my demo site

– Added support for Solid Gauge series

Apart from removing deprecated methods in ExtJs, all the existing code should work directly with this extension & ExtJs 5. There are known issues using with sencha command which I still need more user feedbacks and time to resolve this. Hopefully, I will find some time to finalise my Highmaps extension for ExtJs.

8
May

Highcharts 4 extension for ExtJs is here

Highcharts 4 extension for ExtJs

A new version of Highcharts extension for ExtJs 4 is released. This extension (3.0.1) is a major release which includes following updates:

  • supports Highcharts 4 including the long waited 3D charts and heatmap (in beta)
  • added missing Pyramid series
  • beta support for Highmaps

The documentation has also been updated. Check out the demos on 3D charts and the license for usage. The demos for Highmaps and heatmap will be coming soon which will be implemented in separate web application (using Sencha Architect).

8
Feb

Web based Gapminder

If you haven’t heard of Gapminder, then watch this very charismatic presentation from Ted talk by Prof. Hans Rosling. Basically, Gapminder is a Flash application which presents the world of statistics and demonstrates how it has evolved over centuries. It has been in my long overdue tasks list to implement a web based Gapminder using my Highcharts extension for ExtJs. So far it took me few hours a week over couple months to come up with this prototype. The challenge is that simultaneously updating and animating nearly 300 data points (with color shading) in a fraction of a second is quite CPU intensive. At least, it is possible now in HTML5.

The following is a short video demo of the prototype. It is running under my Mac Mini (Quad core 2.3GHz i7 – 4G RAM).

However, there are still plenty to implement. Online demo and code on github will be available soon

12
Jun

[Updated] ExtJs 4.2: Changing column’s editor dynamically in ExtJS RowEditor

ExtJs 4 Row EditorA while ago I have written a blog on how to change the field type inside a row editor dynamically with ExtJs 3. Since then I received a number of requests for the same example in ExtJs 4. It has been way overdue, so here it is.

An online demo is available in joekuan.org and the source code can found in github.

6
Jun

[Updated] ExtJs 4.2: Using multiple fields inside a row editor cell for editing large values

A few people messaged me that the multiple fields row editor demo in my joekuan.org demo site is broken since I updated to ExtJs 4.2.

I have fixed the demo and it is working fine now. Also I have created a github repository, ExtJs_Examples, which contains all the one off examples code that you will find in joekuan.org (more will be checking-in).

References

[Updated] ExtJs 4.1.1: Using multiple fields inside a row editor cell for editing large values

ExtJs 4: Using multiple fields inside a row editor cell for editing large values