This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
Greg, The first point is part of the header bytes 21-23 & 24-26 The corner points of the image are: lat 23 lon -120 lat 47.2634 lon -63.5664 The FNEXRAD data type has been around for a long time, but if your LDM is very onld version 5, you may use NMC3 as the feedtype. But.....upgrade to current LDM6 when possible to get the best perfomance. Steve Chiswell