NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.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.

Re: [idvusers] aircraft track data

I'm not sure the IDV handles the 2D dimensions. I would suggest sending a note to support-idv@xxxxxxxxxxxxxxxx. 

Don

On 4/10/11 12:39 PM, Sebastian Engelstaedter wrote:

Hi all,

I am new to IDV but it looks like a powerful tool. I want to plot
aircraft track data which come in netCDF format. However, IDV is unable
to read in the current netcdf file I have. Can someone point me to the
correct format. At the moment the netcdf file looks something like this:


dimensions:
data_point = UNLIMITED ; // (28980 currently)
sps01 = 1 ;
variables:
int Time(data_point) ;
Time:long_name = "time of measurement" ;
Time:units = "seconds since 2011-04-04 00:00:00 +0000" ;
Time:_FillValue = -1 ;
Time:standard_name = "time" ;
float IAS_RVSM(data_point, sps01) ;
IAS_RVSM:long_name = "Indicated air speed from the aircraft RVSM (air
data) system. " ;
IAS_RVSM:units = "m s-1 " ;
IAS_RVSM:_FillValue = -9999.f ;
IAS_RVSM:Frequency = 1s ;
IAS_RVSM:Number = 516s ;
byte IAS_RVSM_FLAG(data_point, sps01) ;
IAS_RVSM_FLAG:long_name = "Flag for Indicated air speed from the
aircraft RVSM (air data) system. " ;
IAS_RVSM_FLAG:units = 1s ;
IAS_RVSM_FLAG:_FillValue = -1b ;
IAS_RVSM_FLAG:Frequency = 1s ;
float TAS_RVSM(data_point, sps01) ;
TAS_RVSM:long_name = "True air speed from the aircraft RVSM (air data)
system and deiced temperature. " ;
TAS_RVSM:units = "m s-1 " ;
TAS_RVSM:_FillValue = -9999.f ;
TAS_RVSM:Frequency = 1s ;
TAS_RVSM:Number = 517s ;
TAS_RVSM:standard_name = "platform_speed_wrt_air" ;
byte TAS_RVSM_FLAG(data_point, sps01) ;
TAS_RVSM_FLAG:long_name = "Flag for True air speed from the aircraft
RVSM (air data) system and deiced temperature. " ;
TAS_RVSM_FLAG:units = 1s ;
TAS_RVSM_FLAG:_FillValue = -1b ;
TAS_RVSM_FLAG:Frequency = 1s ;
float TAT_DI_R(data_point, sps01) ;
TAT_DI_R:long_name = "True air temperature from the Rosemount deiced
temperature sensor. " ;
TAT_DI_R:units = "degK " ;
TAT_DI_R:_FillValue = -9999.f ;
TAT_DI_R:Frequency = 1s ;
TAT_DI_R:Number = 520s ;
TAT_DI_R:standard_name = "air_temperature" ;
....




Any help is much appreciated.

Best wishes,
Sebastian



--
Don Murray
NOAA/ESRL/PSD and CIRES
303-497-3596
http://www.esrl.noaa.gov/psd/people/don.murray/