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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Hi Vikram, > Domain and range are scattered everywhere throughout VisAD, but > I never seem to get a clear idea of exactly what they are. Good question. The names are taken from the domain and range of functions. So for example in a time series of temperatures, time is the domain and temperature is the range. That is, temperature is a function of time. But in computer data, the function is represented by a finite number of samples, called a Field. These samples are taken at a finite set of time values, hence the 'domain Set' of the Field is just this set of time values. The temperature values at these times may be called 'range values' or 'sample values' or just 'samples'. I have to admit that some of the names of classes and methods in VisAD are a bit confusing, and I could have chosen better names. We've tried to make up for it by supplying lots of code examples. Please let me know if this is still confusing, or if you have questions about specific classes or methods. Cheers, Bill ---------------------------------------------------------- Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI 53706 hibbard@xxxxxxxxxxxxxxxxx 608-263-4427 fax: 608-263-6738 http://www.ssec.wisc.edu/~billh/vis.html
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