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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
> Yuan: > > Apologies for not getting back to you on this. > > Yes, the shape files work and they plot in the right places. > Hooray! I'm hoping to play around with this a bit more in the near future. > > Jim Jim, Thanks for the information. Yuan > > On 6/29/12 3:09 PM, Unidata IDV Support wrote: > >> Yuan: > >> > >> That's great news. This is a prime example of reducing "data > >> friction." Nice work. > >> > >> Jim > >> > > Jim, > > > > You can try the nightly release now. I think I have fixed all your > > problem. Otherwise, Let us know. > > > > > > Yuan > >> On 6/26/12 4:21 PM, Unidata IDV Support wrote: > >>>> Yuan: > >>>> > >>>> Thanks for looking into all these issues. This kmz/shape file > >>>> stuff is more complicated than I would have thought! > >>>> > >>>> Are these changes that you will eventually implement into the IDV? > >>>> Is there anything I can do from my end? > >>> Jim, > >>> I have checked in all the changes and I am waiting for John's CDM > >>> release. You don't need to do anything. I will let you know when it is > >>> ready in the nightly release. > >>> > >>> > >>> Yuan > >>>> With regards to lift tickets, when you come to Utah, give me a call. > >>>> > >>>> Jim > >>>> > >>>> On 6/26/12 11:57 AM, Unidata IDV Support wrote: > >>>>>>> Yuan: > >>>>>>> > >>>>>>> Here are some answers to your questions, but it might get confusing! > >>>>>>> > >>>>>>> With regards to why I am loading the zip, it's because I cannot get > >>>>>>> some of the .shp file to plot at all. I'm not sure why this > >>>>>>> particular > >>>>>>> shape file is so problematic. I have others from other sources that > >>>>>>> plot just fine. That being said, I have used .zip files in the past > >>>>>>> because it allows for filtering, etc. > >>>>>> Jim, > >>>>>> In many .shp files, the attribute format (.dbf) and index format > >>>>>> (.shx) are included. They can also be separated. Those shp files you > >>>>>> were loading into the IDV obviously have separated style. > >>>>>> > >>>>> Jim, > >>>>> See the attached image, the rad boundary line is from the KMZ > >>>>> file, and the green is from the shapefile. The problem of the position > >>>>> of the shape file is due to the projection. The CDM library uses the > >>>>> Transverse_Mercator projection which has the fix earth radius. After > >>>>> checking with John and Jeff, we move to use the UTM, and the position > >>>>> is corrected. > >>>>> Another mystery is why the SkiLifts shape file not working. > >>>>> According to Jeff, the IDV only parse some shape from the .shp file and > >>>>> causing the mismatch with .dbf file. One quick solution is to remove > >>>>> the .dbf file inside the zip file. But I am going to explore the other > >>>>> solution to make it easier for user like you. > >>>>> > >>>>> Now, with all these answers and efforts I put in, are you going > >>>>> to send us free lift tickets? :) > >>>>> > >>>>> > >>>>> Yuan > >>>>>>> In the case of the attached with IDV3.0u3, the SkiAreaBoundries > >>>>>>> plot (in the wrong location) if I go to Data>Choose Data and load in > >>>>>>> the > >>>>>>> zip file. > >>>>>> This likely be a bug in the IDV, I still try to rule out the > >>>>>> possibility of the precision of the data itself. > >>>>>> > >>>>>> If I instead try to load in just the .shp file, I cannot get > >>>>>>> it to plot successfully either via Data>Choose Data or if I try to add > >>>>>>> it as a map. > >>>>>>> > >>>>>>> As you know, the data here is plotted in the wrong location. In the > >>>>>>> attached, I used the kmz file I sent earlier to plot the data using > >>>>>>> IDV2.9u2 (note that IDV3.0u3 cannot read the kmz file) and the shapes > >>>>>>> are plotted in the correct location. I've used terrain shading so you > >>>>>>> can get an idea of where they should be. > >>>>>> IDV 2.9 and 3.0 should behavior the same. There is no changes since > >>>>>> 2.8 in this portion of the source code. I figure out the problme, the > >>>>>> IDV tried to write a file named doc.xml in the location it has no > >>>>>> permission. I will check in a fix soon. > >>>>>> > >>>>>>> For what it is worth, I've downloaded .shp and .zip files from > >>>>>>> other sites whereby IDV has struggled and is unable to plot the data. > >>>>>>> Download the lesson at > >>>>>>> http://edcommunity.esri.com/arclessons/lesson.cfm?id=397 and see if > >>>>>>> you > >>>>>>> can plot the various data for Colorado. Perhaps this is like netCDF > >>>>>>> where not all netCDF files are "created equal." > >>>>>>> > >>>>>> I will give it a try. > >>>>>> > >>>>>> > >>>>>> Yuan > >>>>>>> Jim > >>>>>>> > >>>>>>> > >>>>>>> > >>>>> Ticket Details > >>>>> =================== > >>>>> Ticket ID: GDP-431455 > >>>>> Department: Support IDV > >>>>> Priority: Normal > >>>>> Status: Open > >>>>> > >>>> > >>> Ticket Details > >>> =================== > >>> Ticket ID: GDP-431455 > >>> Department: Support IDV > >>> Priority: Normal > >>> Status: Open > >>> > >> > >> > > > > Ticket Details > > =================== > > Ticket ID: GDP-431455 > > Department: Support IDV > > Priority: Normal > > Status: Closed > > > > > Ticket Details =================== Ticket ID: GDP-431455 Department: Support IDV Priority: Normal Status: Closed