Category Archives: programming

Using Google Visualization API with own data source

The Google Visualization API allows you to create charts and maps based on data you provide. This data can be in a Google Spreadsheet or be something you provide yourself. The visualizations themselves are mostly written in Javascript, although there … Continue reading

Posted in programming | Tagged , , | 1 Comment

Creating web charts using Open Flash Chart

Open Flash Chart gives you the possibility to have Flash based charts on your website without the need to know Flash. All it takes is a JSON file that describes the chart. This JSON file can be a static file … Continue reading

Posted in programming | Tagged , , | Leave a comment

Google Maps icons and circles

It is quite easy to add content to Google Maps by using the API. In this article we will use some icons to mark points of interest and use polygons to emulate circles around a marker. We want to give … Continue reading

Posted in programming | Tagged | 2 Comments

Getting XenServer VM metrics in Java

XenServer is a product of Citrix that can run virtual machines on a set of physical hosts called a pool. There is an API that allows you to create programs that interact with the XenServer pool. There are some function … Continue reading

Posted in Cloud computing, programming | Tagged , | 3 Comments

Using OpenJMS within Eclipse

OpenJMS allows you to use the Java Message Service (JMS) without a full-fledged Java Enterprise Edition container. It is an open source implementation of the JMS 1.1 specification. We start by installing and starting OpenJMS. On Windows this is done … Continue reading

Posted in programming | Tagged , , , | Leave a comment

Using the sage mathematical software system

This article describes the installation and simple usage of the Sage mathematical software system. Sage is free, open-source math software that supports research and teaching in algebra, geometry, number theory, cryptography, numerical computation, and related areas. We start by installing … Continue reading

Posted in programming | Tagged | 1 Comment

Examples of public SOAP web services

In the previous article we showed how to use the suds library in Python to access SOAP web services. Here are some extra examples of public SOAP web services. Some of the outputs are edited for readability. We start with … Continue reading

Posted in programming | Tagged , , | Leave a comment

Python SOAP client with suds

The library suds allows Python to make SOAP calls (that is, Python is the web service client). We start by installing the suds library on an Ubuntu machine. The Python setuptools are needed to install suds. sudo apt-get install python-setuptools … Continue reading

Posted in programming | Tagged , , | 13 Comments

Using Python to add new posts in WordPress

Wordpress is a web publishing platform, which allows you to add and edit content to your website. This can be done by visiting the administration interface, wp-admin. However, there is also an XML RPC programming interface that allows you to … Continue reading

Posted in programming | Tagged , | 10 Comments

Sample Tomcat application

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process. We want to … Continue reading

Posted in programming | Tagged , | Leave a comment