> > Dear MR.Yuan, > I am extremely sorry for having put wrong attachement that too in > unzipped form. > I am attaching a set of .nc files in zipped form for your perusal and > comments. > > Regards > S B thampi Hi Mr. Thampi, Is the geo location correct? The time display of the dataset maybe a bug in the CF Radial adapter. The scale factors and added offset should be ok to change in different sweep. I will give you a better description about these issues next week. Yuan > > -----Original Message----- > From: S B Thampi <address@hidden> > Reply-to: address@hidden > To: address@hidden > Subject: Re: [IDV #TZQ-924803]: Radar multi PPI (Volume scan data) in > netCDF (.nc) could not be opened using IDV > Date: Thu, 15 Sep 2011 17:54:06 +0530 > > Dear Mr.Yuan, > This is in continuation of my reply posted a few days back regarding > CF/Radial data. > As informed, I converted the data into .nc file following CF/Radial > convention and attached. > Though I am able to open and visualise the data, I have afew issues to > be sorted out: > > 1. The date time display is incorrect. It is whowing 1970-1-1T00:00:00Z > instead of 2010-05-19T00:07:30Z. > > 2. I have to apply different values for the attributes scale_factors and > add_offset, for different sweeps, for velocity and spectrum width data. > Is it possible to achieve that by defining scale factor as a "variable" > and pass on the value by stating VR:scale_factor = "scale_factor" ? > > 3. Data in One of the attached file is written as byte and the other as > 'int'. The second file size is almost double. I want to write all data > in ubyte. is it possible by some means? > > > Thanks in advance. > > Regards > S B Thampi > > > -----Original Message----- > From: Unidata IDV Support <address@hidden> > Reply-to: address@hidden > To: address@hidden > Cc: address@hidden > Subject: [IDV #TZQ-924803]: Radar multi PPI (Volume scan data) in netCDF > (.nc) could not be opened using IDV > Date: Wed, 07 Sep 2011 12:15:17 -0600 > > > Full Name: SB Thampi > > Email Address: address@hidden > > Organization: India Meteorological Department > > Package Version: 3.0 build date:@DATE@ > > Operating System: Linux > > Hardware: Java: home: /home/administrator/IDV_3.0/jre version: 1.6.0_20 > > j3d:1.5.2 fcs (build4) > > Description of problem: > > > > Netcdf sweep error:init > > java.lang.NullPointerException > > > > I converted Groundbased Weather Radar Volume scan data in Gematronik > > Rainbow format to netCDF format using CDL and ncgen utilities. Unable to > > open the data in IDV though using ncbrowse I am able to open and visualise > > the data. I am attaching the .ncfile for your perusal. Your kind support > > is solicited. > > > > Regards > > S B Thampi > > Hi Mr. Thampi, > I checked the netCDF file you attached, this nc file doesn't follow any > conventions required by the IDV and can not be constructed as a radial type > netCDF file. If you want to generate nc format, please follow this convention: > > http://www.ral.ucar.edu/projects/titan/docs/radial_formats/CfRadialDoc.pdf > > Also be aware that this document is still under development. > > I wonder what is the original format of the radar volume file, does it use > the format like NEXRAD? If so, you probably don't need to do any format > converting. > > > Yuan > > > > ****************** > > > > Ticket Details > =================== > Ticket ID: TZQ-924803 > Department: Support IDV > Priority: Normal > Status: Closed > > > > -- > S B Thampi, > Director, CDR Station, Chennai, > Regional Meteorological Centre, > India Meteorological Department > > 10th Floor, Port Trust Centenary Building, > Rajaji Salai, Chennai 600001 > > Ph : +91 44 25393180 (O), > : +91 44 22248530 (R) > FAX : +91 44 25360187 > Mobil: +91 97 91035198 > > > > > Ticket Details =================== Ticket ID: TZQ-924803 Department: Support IDV Priority: High Status: Open
NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.