22 Free Tools for Data Visualization and Analysis - PCWorld Business Center. Review April 20, 2011 06:00 AM ET Computerworld - You may not think you've got much in common with an investigative journalist or an academic medical researcher. But if you're trying to extract useful information from an ever-increasing inflow of data, you'll likely find visualization useful -- whether it's to show patterns or trends with graphics instead of mountains of text, or to try to explain complex issues to a nontechnical audience.
Want to see all the tools at once? For quick reference, check out our chart listing all the tools profiled here. There are many tools around to help turn data into graphics, but they can carry hefty price tags. Related Blog Here's a rundown of some of the better-known options, many of which were demonstrated at the Computer-Assisted Reporting (CAR) conference last month. Data cleaning Before you can analyze and visualize data, it often needs to be "cleaned. " DataWrangler Click on a row or column, and DataWrangler will suggest changes. Computers & Graphics : Visual data mining and analysis of software repositories. Abstract. OhioLINK ETD: Alali, Abdulkareem. Longitudinal analysis of long-timescale open source repository data. Maispion. VanAntwerpM042009T. Digital Library - Proceedings.