Julia,
I am unfamiliar with TecPlot. If there are specific features that
you expect from DIAdem, I would be happy to answer your
questions. DIAdem provides powerful capabilites including data
management, analysis, and report generation. These tools are easy
and intuitive in the DIAdem environment which allows for quicker data
development. Additionally, DIAdem provides easy integration with
Data Acquisition software such as LabVIEW. Finally, DIAdem is
built on top of a powerful VBScripting environment which allows for
automation of data manipulation. If need a quick overview of the
features that DIAdem provides, I would start at this webpage:
http://www.ni.com/diadem/
I also recommend reading this white paper on the power of DIAdem:
http://www.ni.com/pdf/wp/us/diadem_9_whitepaper.pdf
Thanks,
Tyler T.
Applications Engineer
National Instruments