[netcdf-java] How to get FeatureType trajectories working?

• To: Java NetCDF <netcdf-java@xxxxxxxxxxxxxxxx>
• Subject: [netcdf-java] How to get FeatureType trajectories working?
• From: Heiko Klein <Heiko.Klein@xxxxxx>
• Date: Thu, 27 Aug 2015 10:21:24 +0200

Hi,

I'm trying to read trajectory data with netcdf-java. I've seen figures
of this with netcdf-java 2.2 at

https://www.unidata.ucar.edu/software/thredds/v4.3/netcdf-java/tutorial/PointDatatype.html

but both netcdf-4.6 and CF-1.6 have a different layout for trajectory data.



I've tried now to generate a netcdf/CF file following the guidelines at
http://www.unidata.ucar.edu/software/thredds/current/netcdf-java/reference/FeatureDatasets/CFpointImplement.html
(see attached file).


ToolsUI gives me a 'CoordSys' with trajectory, time, lat, lon and
time,lat,lon have the expected axisTypes. Using FeatureScan, I get a
coverage of 'Swath(T,Y,X): trajectory', which looks ok, but I get also
an error message:

---------
/home/heikok/openoil2.nc4
 NetCDF-4
 map = 'f:D(2)->R(4)'

 null

CoverageFactory for '/home/heikok/openoil2.nc4'
coverage = Swath
FeatureDatasetFactoryManager errlog = Table
PsuedoStructure(trajectory)/MultidimPseudo(trajectory,time) featureType
TRAJECTORY: lat/lon/time coord not found
**Failed to find FeatureDatasetFactory for= /home/heikok/openoil2.nc4
datatype=TRAJECTORY
----------


According to 'CoordSys', lat/lon/time are availble.

The PointFeature/TRAJECTORY wasn't then able to plot the data. Any idea
how I can correct my data to enable plotting in netcdf-java UI?


Best regards,

Heiko

Attachment: openoil2.nc4
Description: Binary data

• Follow-Ups:
  • Re: [netcdf-java] How to get FeatureType trajectories working?
    • From: Kyle Wilcox