On the lower left-hand side of this blog you’ll notice what is called a tag cloud: it’s a cluster of the words that people who have posted to this blog have “tagged” their postings with. For example, I’ll probably tag this posting with words like “technology,” “web 2.0,” and “wordle.” These tags allow other users to search the archive of the blog: if someone is interested in learning technologies, they can do so search for the word “technology” and all the posting that have been tagged with that word will appear. Tag clouds take all those tag words and display them as a cluster; moreover, the more times that a tag word appears, the larger it will appear in the cluster. That way, you can tell, at a glance, what are the popular themes across the blog postings. Continue reading Word Frequency Visualization with Wordle – Mark Morton