Philipp K. Janert

Areas of Expertise:

data analysis
data modeling
mathematical modeling
consulting

speaking
training
writing

Biography
Books
Articles

Philipp K. Janert provides consulting services for data analysis and mathematical modeling, drawing on his previous careers as physicist and software engineer.

He is the author of Gnuplot in Action: Understanding Data with Graphs (Manning Publications) and has written for the O'Reilly Network, IBM developerWorks, and IEEE Software. He holds a Ph.D. in theoretical physics from the University of Washington.

Visit his company website at www.principal-value.com.

Data Analysis with Open Source Tools
by Philipp K. Janert
November 2010
Print: $39.99
Ebook: $31.99

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Making Sense of Java's Dates
Publish Date: Jun. 4, 2003Measuring time is easy. Representing it is hard. Time zones, internationalization, and localization all make it tricky to give the correct date. Newer versions of the JDK have improved Java's date and time APIs, but they're still a little tricky. Philipp Janert explores date and time handling in Java. Learning and Using Jakarta Digester
Publish Date: Oct. 23, 2002Turning an XML doc into Java bean objects is a common task, but the SAX and DOM APIs are too low-level. Jakarta Digester uses a series of rules to simplify this important task. Simple XML Parsing with SAX and DOM
Publish Date: Jun. 26, 2002While there are two APIs for handling XML, SAX and DOM, they are large and formidable to beginners. This article offers a tutorial for simple XML parsing.

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