Re: [CF-metadata] FW: netcdf for particle trajectories

2012-01-12 Thread Ute Brönner
Rodrigo, Thank you for your mail and suggestions! While I agree that it might be useful to have grid information as well as particle trajectory information in the same file I would suggest to keep them in separate files. Especially as we are aiming to agree on a standard for particle

Re: [CF-metadata] FW: netcdf for particle trajectories

2012-01-12 Thread Rodrigo Fernandes
Hi again, The decision of making MOHID model to handle HDF files instead of NetCDF was taken by MARETEC probably 12 years ago (before my entrance in MARETEC), and I think it was taken due to NetCDF limitations in that time - HDF was providing the opportunity to compress and to establish an

Re: [CF-metadata] FW: netcdf for particle trajectories

2012-01-10 Thread Rodrigo Fernandes
Hi everyone, I suppose most of you (except Mark) doesn't know me, I was introduced in this discussion group through Mark, which I met in Kuwait oil spill modelling working group, where I was presenting the work from our group in terms of oil spill modelling with MOHID (www.mohid.com) and risk

Re: [CF-metadata] FW: netcdf for particle trajectories

2011-12-05 Thread Jonathan Gregory
Dear Chris The only place the time dimension is used is for the time and row_size variables, so I can't help thinking there could be a work around. Rich Signell suggested you could just use a as-big-as-you-might-need time coordinate -- which is one option. yes, I think that's a good and easy

Re: [CF-metadata] FW: netcdf for particle trajectories

2011-12-02 Thread Chris Barker
Sorry I haven't send what I promise yet -- I've been home sick. On 12/2/11 1:37 AM, Jonathan Gregory wrote: I agree, this is a case for a ragged array, with two unlimited dimensions, logically speaking. However such a thing can be accommodated in the new discrete geometry conventions

Re: [CF-metadata] FW: netcdf for particle trajectories

2011-11-29 Thread Jonathan Gregory
Dear Chris I think its time to start using netcdf-4 for large collections of point data which need to be compressed. Instead of first making a standard, we need to try out the possibilities and see how it performs. That may be true, time to move on eventually! However, you can use netcdf4

Re: [CF-metadata] FW: netcdf for particle trajectories

2011-11-29 Thread Jonathan Gregory
Sorry, quite right, this is correct. http://www.unidata.ucar.edu/staff/caron/public/CFch9-may10.pdf Thanks, Rich. J ___ CF-metadata mailing list CF-metadata@cgd.ucar.edu http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata

Re: [CF-metadata] FW: netcdf for particle trajectories

2011-11-29 Thread Chris.Barker
On 11/29/11 4:15 AM, Jonathan Gregory wrote: That could be done if you can represent the data using a new kind of featureType to be added to the CF chapter on discrete sampling geometries, which will be included in CF 1.6 (coming soon). The text for the discrete sampling geometry chapter is at

Re: [CF-metadata] FW: netcdf for particle trajectories

2011-11-28 Thread Chris Barker
On 11/25/2011 5:01 AM, Ute Brönner wrote: Hi folks, I kind of lost track of our latest discussions and had the feeling that this was partly outside the mailing group; yes, it was -- we had some discussion among a subset of teh CF list that was interested in particle model output. so I

Re: [CF-metadata] FW: netcdf for particle trajectories

2011-11-28 Thread Chris Barker
On 11/26/2011 9:14 AM, John Caron wrote: Im intending to incorporate the netcdf-4 C library into the netcdf-java library using JNI. Im hoping to have something working in the next few months, but we'll see. This will be an optional component, and will obviously make portability an issue. Good

Re: [CF-metadata] FW: netcdf for particle trajectories

2011-11-26 Thread John Caron
Hi Ute: On 11/25/2011 6:01 AM, Ute Brönner wrote: Hi folks, I kind of lost track of our latest discussions and had the feeling that this was partly outside the mailing group; so I will try to sum up what we were discussing. My latest try was to produce NetCDF for particle trajectory trying

[CF-metadata] FW: netcdf for particle trajectories

2011-11-25 Thread Ute Brönner
Hi folks, I kind of lost track of our latest discussions and had the feeling that this was partly outside the mailing group; so I will try to sum up what we were discussing. My latest try was to produce NetCDF for particle trajectory trying to write out the concentration grid which resulted in

Re: [CF-metadata] FW: netcdf for particle trajectories

2011-11-25 Thread Etienne Tourigny
You might prefer to try Nujan instead of mixing python and netcdf, although variables are limited to 2GB http://www.ral.ucar.edu/~steves/nujan.html On Fri, Nov 25, 2011 at 11:01 AM, Ute Brönner ute.broen...@sintef.no wrote: Hi folks, I kind of lost track of our latest discussions and had the