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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.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.
Hello all, this is to announce the release of version 1.75 of Ncview, a visual netCDF data browser. People who use netCDF format files often find that Ncview is a quick and useful tool for getting a feeling for what their data looks like. It is available from: http://meteora.ucsd.edu/~pierce/ncview_home_page.html Changes in this version are: * Support for a time axis that uses the "udunits" package conventions. What does this mean in practical term? Well, if you follow the udunits conventions when setting the units and values of your time axis (for example, units="days since 1990-01-01"), then Ncview will display the calendar date of the data (such as "3_Jun_1995"), rather than a largely uninterpretable value (such as "day 3907"). This works in the popup X-Y plot, too. In practice, this is a great convenience if you use any observed data. * The code that determins the X windows visual has been extensively reworked. An upshot of this is that it should now work correctly on all screen depths of Linux boxes, and on Crays as well. (I think it should still continue to work in the Win'95 Cygnus development environment, but haven't tested it). * Various bug fixes, including an annoying one that crashed when all data values were zero. * I've updated the binaries for platforms I have access to. The head of the standard README follows. Overview: What Ncview *is*. --------------------------- This is the source for "ncview", a X Windows (Release 4 or higher) visual browser for netCDF data format files. Ncview displays a 2-dimensional, color representation of data in a netCDF file. You can animate the data in time (making simple movies), flip or enlarge the picture, scan through various axes, change colormaps, etc. You can also plot the data in X-Y plots and then print those, courtesy of the SciPlot widget from Robert W. McMullen <rwmcm@xxxxxxxxxxxxxxxxxxx>. What Ncview *isn't*. -------------------- Ncview is *not* an analysis package. There are several excellent commercial packages available for that. Rather, its purpose in life is to view movies or simple plots of data stored in netCDF format files quickly, easily, and simply. To view your data in a 'movie', all you do is fire Ncview up and press a couple buttons--that's it! To make a plot, just click on the movie! By contrast, analysis programs often require a lot of overhead massaging the data before you can do much. --------------------------------------------------------------- David W. Pierce / Climate Research Division Scripps Institution of Oceanography / (619) 534-8276 (voice) dpierce@xxxxxxxx / (619) 534-8561 (fax) ---------------------------------------------------------------
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