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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
> The level can be altitude, i.e., 0 km. It is a 2-D field and the level > is not defined in the GDS for this parameter. > I don't know how this is defined, but in the browser, you can find out that the unit for the level is wrong. Yuan > On 7/24/2013 12:04 PM, Unidata IDV Support wrote: > >> Should work now, > >> > >> http://disc2.nascom.nasa.gov:80/dods/_expr_{3B43_V7_accum}{sum(r,time=jan1998,time=feb1998)}{0:60,0:20,0:0,jan1998:jan1998} > >> > > > > I think the level is in-corrected, I am seeing the level = 0 millibar. Is > > it right? > > > > > > Yuan > >> On 7/23/2013 8:28 AM, Liu, Zhong (GSFC-610.2)[GEORGE MASON UNIVERSITY] > >> wrote: > >>> Yes, there is a problem with our GDS. The syntax is correct. > >>> As soon as it is fixed, I will let you know. Thanks. -Zhong > >>> > >>> On 7/22/2013 4:00 PM, Unidata IDV Support wrote: > >>>>> Hi Sean, > >>>>> > >>>>> Thank you for the quick reply. > >>>>> > >>>>> Yes, http://disc2.nascom.nasa.gov/dods/3B43_V7_accum can work and I > >>>>> tested it before. > >>>>> > >>>>> I still don't understand, according to > >>>>> http://www.iges.org/grads/gds/doc/user.html, the analysis link sent > >>>>> earlier > >>>>> should work, otherwise IDV can't display values using "Value Plots". Is > >>>>> this a bug? > >>>>> > >>>>> -Zhogn > >>>>> > >>>> You can construct a URL with subset constraints and load to the IDV, but > >>>> the previous analysis link has syntax error. You can use a browser to > >>>> verify the syntax of the dods link. > >>>> > >>>> > >>>> Yuan > >>>>> On 7/22/2013 10:54 AM, Unidata IDV Support wrote: > >>>>>> Greetings Zhong, > >>>>>> > >>>>>> If you are using the IDV, you can just add the dods url (without any > >>>>>> subsetting parameters) into the url datachooser and let the IDV guide > >>>>>> you in subsetting your dataset. The URL I used to access your dataset > >>>>>> is > >>>>>> > >>>>>> http://disc2.nascom.nasa.gov/dods/3B43_V7_accum > >>>>>> > >>>>>> (see attached screenshot to see the url datachooser). > >>>>>> > >>>>>> There are several kinds of displays you can use, other than > >>>>>> the typical contour plot. For example, once your data is loaded > >>>>>> into the IDV, you will be taken to the Field Selector tab of the > >>>>>> Dashboard. From there, you can select the Display type that you > >>>>>> would like to create. If you select "Color-shaded Plan View", you > >>>>>> will get a colored image without contours. Check out the IDV > >>>>>> gallery for more examples of what the IDV can do: > >>>>>> > >>>>>> http://www.unidata.ucar.edu/software/idv/gallery/ > >>>>>> > >>>>>> > >>>>>> > >>>>>> Cheers, > >>>>>> > >>>>>> Sean > >>>>>> > >>>>>> > >>>>>> > >>>>>>> Hi, > >>>>>>> > >>>>>>> I am testing an analysis from our GDSand it looks like, > >>>>>>> http://disc2.nascom.nasa.gov/dods/_expr_%7B3B43_V7_accum%7D%7Bsum%28r,time=jan1998,time=feb1998%29%7D%7B0:60,0:30,0:0,jan1998:jan1998%7D > >>>>>>> can work in IDV. But, I am having a difficulty to display the result > >>>>>>> in > >>>>>>> IDV (4.0u1). IDV can display the values. > >>>>>>> > >>>>>>> Another question is, can IDV display pixels/grids, other than > >>>>>>> contours? > >>>>>>> > >>>>>>> Thanks. > >>>>>>> > >>>>>>> -Zhong > >>>>>>> > >>>>>>> -- > >>>>>>> Zhong Liu, Ph.D. > >>>>>>> address@hidden > >>>>>>> George Mason University and > >>>>>>> NASA Goddard Earth Sciences Data and > >>>>>>> Information Services Center > >>>>>>> NASA/GSFC, Code 610.2 > >>>>>>> Greenbelt. MD. 20771 U.S.A. > >>>>>>> (301) 614-5764 (voice) > >>>>>>> (301) 614-5268 (fax) > >>>>>>> http://disc.gsfc.nasa.gov > >>>>>>> http://disc2.nascom.nasa.gov/Giovanni/tovas/ > >>>>>>> http://disc.sci.gsfc.nasa.gov/hurricane/trmm_quikscat_analysis.shtml > >>>>>>> http://disc.sci.gsfc.nasa.gov/agriculture/ais_sup/current_conditions.shtml > >>>>>>> > >>>>>>> > >>>>>>> > >>>>>> Ticket Details > >>>>>> =================== > >>>>>> Ticket ID: VUT-367574 > >>>>>> Department: Support IDV > >>>>>> Priority: Normal > >>>>>> Status: Open > >>>>> -- > >>>>> Zhong Liu, Ph.D. > >>>>> address@hidden > >>>>> George Mason University and > >>>>> NASA Goddard Earth Sciences Data and > >>>>> Information Services Center > >>>>> NASA/GSFC, Code 610.2 > >>>>> Greenbelt. MD. 20771 U.S.A. > >>>>> (301) 614-5764 (voice) > >>>>> (301) 614-5268 (fax) > >>>>> http://disc.gsfc.nasa.gov > >>>>> http://disc2.nascom.nasa.gov/Giovanni/tovas/ > >>>>> http://disc.sci.gsfc.nasa.gov/hurricane/trmm_quikscat_analysis.shtml > >>>>> http://disc.sci.gsfc.nasa.gov/agriculture/ais_sup/current_conditions.shtml > >>>>> > >>>>> > >>>> Ticket Details > >>>> =================== > >>>> Ticket ID: VUT-367574 > >>>> Department: Support IDV > >>>> Priority: Normal > >>>> Status: Closed > >>>> > >> > >> -- > >> Zhong Liu, Ph.D. > >> address@hidden > >> George Mason University and > >> NASA Goddard Earth Sciences Data and > >> Information Services Center > >> NASA/GSFC, Code 610.2 > >> Greenbelt. MD. 20771 U.S.A. > >> (301) 614-5764 (voice) > >> (301) 614-5268 (fax) > >> http://disc.gsfc.nasa.gov > >> http://disc2.nascom.nasa.gov/Giovanni/tovas/ > >> http://disc.sci.gsfc.nasa.gov/hurricane/trmm_quikscat_analysis.shtml > >> http://disc.sci.gsfc.nasa.gov/agriculture/ais_sup/current_conditions.shtml > >> > >> > > > > Ticket Details > > =================== > > Ticket ID: VUT-367574 > > Department: Support IDV > > Priority: Normal > > Status: Open > > > > > -- > Zhong Liu, Ph.D. > address@hidden > George Mason University and > NASA Goddard Earth Sciences Data and > Information Services Center > NASA/GSFC, Code 610.2 > Greenbelt. MD. 20771 U.S.A. > (301) 614-5764 (voice) > (301) 614-5268 (fax) > http://disc.gsfc.nasa.gov > http://disc2.nascom.nasa.gov/Giovanni/tovas/ > http://disc.sci.gsfc.nasa.gov/hurricane/trmm_quikscat_analysis.shtml > http://disc.sci.gsfc.nasa.gov/agriculture/ais_sup/current_conditions.shtml > > Ticket Details =================== Ticket ID: VUT-367574 Department: Support IDV Priority: Normal Status: Open