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Hi Levi, re: > Is there a good way to view NLDN data in IDV? If you have files of NLDN data in a local (or NFS mounted) directory, you can load the lightning data through the: Dashboard -> Data Chooser -> Files link. You will need to specify netCDF / GEMPAK Point Data Files as the Data Source Type. The next thing you will want to do is to specify the user of the Lightning layout model when doing a Point Data Plot. After that, there are a number of things that can be done like fading the display by time. re: > Are there any programs that > can sift and organize NLDN data into columns (such as polarity and IC/CG)? One of the display types you can use after you load the lightning data from a local file is a Point Data List. This will give you a tabular view of the data in the file, and you will be able to sort the data by field values (e.g., by 'sgnl' which is the signal strength). NB: you will likely want to click on the Select Fields button in the control for the Point Data List display and choose most if not all of the fields to list. At this point, you can output the values into a CSV or netCDF file via the Files -> Save action in the control for the Point Data List display. Once the data is in a CSV file, you could use whatever program you can find for "sifting" the data. Something you might need: an LDM pattern-action file action that will FILE the NLDN data. Here is one that files all of the NLDN data received grouped by hour: NLDN ^([12][0-9][0-9][0-9]|[0-9][0-9])([0-3][0-9][0-9])([0-2][0-9])([0-5][0-9])([0-5][0-9]) FILE -close data/nldn/\1\2\3.ingest NB: - a number of the white spaces in this action must be tabs, not spaces One way to read this listing is: NLDN<tab>^([12][0-9][0-9][0-9]|[0-9][0-9])([0-3][0-9][0-9])([0-2][0-9])([0-5][0-9])([0-5][0-9]) <tab>FILE<tab>-close data/nldn/\1\2\3.ingest Please let us know if you need more information. Cheers, Tom -- **************************************************************************** Unidata User Support UCAR Unidata Program (303) 497-8642 P.O. Box 3000 address@hidden Boulder, CO 80307 ---------------------------------------------------------------------------- Unidata HomePage http://www.unidata.ucar.edu **************************************************************************** Ticket Details =================== Ticket ID: KIG-233190 Department: Support IDV Priority: Normal Status: Closed