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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
Gempak users, In response to requests for the capability of displaying some of the text and graphic information available in the NIDS products not included within the radial or raster image portion of the data block, I have created a program GPNIDS which is essentially an expanded capability version of GPVAD which I previously released. I have placed a binary/source combined tarfile for gpnids at: http://my.unidata.ucar.edu/modules.php?name=Downloads&d_op=viewsdownload&sid=9 Linux, Freebsd, and Solaris (sparc and X86) executables are included with the necessary pdf and hlp files, as well as the source for building under GEMPAK5.7.2p2/unidata/programs/gpnids. At this point, it is a stand alone program since the image display portion of GEMPAK will require modification within the device driver code at a different level to handle NIDS products that don't have an image, or are in graph coordinates (like the NVW). I have tested the program with the NCR, N1P, NTP products in the NOAAPORT data stream for OUTPUT of the tablular and alphanumeric data, as well as the NVW vad wind graph. I have also tested the program with the following NEXRAD products from the NWS ftp site for overlay, eg: http://www.nws.noaa.gov/tg/radfiles.html ftp://tgftp.nws.noaa.gov/SL.us008001/DF.of/DC.radar/ storm tracking information (DS.58sti) tornado vortex signature (DS.61tvs) mesocyclone detection (DS.p60-m) Hail index (DS.p59hi) To integrate these overlays with NMAP2, you can use the VG driver from GPNIDS and import the information into NMAP2 that way. Additional features/symbols control etc. will be added in the future, but the basic start is there. Steve Chiswell Unidata User Support