Re: data format quesiton

         Just FYI, there is a handy tool, grads2nc, to convert Grads data
to netcdf data developed at GFDL. You can download this tool from
http://www.gfdl.noaa.gov/products/vis/data/netcdf/GFDL_VG_NetCDF_Utils.html#grads2nc

         It might take you some time to configure and compile it. But the
conversion is very neat, just a command line and it will do it.

         Xianglei

On Thu, 12 Jan 2006, Saji N. Hameed wrote:

>
> Kate,
>
> Since I am also a GraDs-turned-NCL user, this issue is of much interest to
> me. Recently for some analysis I had to convert a lot of data (that was
> designed for use in GrADs) to netcdf format, I did some playing around
> using GrADs itself, shell script and NCL. My approach may not directly solve
> your problem, but I hope it is of some use.
>
> Specifically using a Grads script I read the data and output information
> necessary to create NetCDF data. NCL could then read this ascii 'info' file
> and parse it to create the necessary metadata for use in NCL.
>
> * WARNING * The following method is very specific and may not suit you.
>
> I am attaching three scripts for your reference -
>
> o swap.gs - A Grads script that may output necessary info to
> create MetaData. Since I also had to byteswap my
> data, the script also writes out the original data.
> You may not need this.
>
> Example usage: grads -cl 'run swap.gs varxyz'
> assumes you have a file named "varxyz".ctl
> and the variable inside is called "varxyz"
> "varxyz" can be any string, for example
> sst.
>
> Sample Output: sst.info - Information needed to
> create Metadata
> sst.bin - byteswapped data
>
> o bin2nc.ncl - this is a very specific script, so it may not
> suit you. But it may give you some idea of how
> to use the information inside say sst.info to
> create Metadata for the variable sst. The script
> creates time information assuming the resolution
> is daily (this may need to be modified).
>
> o dtmi.sh - a shell script to automate the usage of bin2nc.ncl.
> May be helpful if you have many files to convert
> to netcdf.
>
> For example to convert data specified by sst.ctl into netcdf, one
> can give the following series of comments.
>
> 1. grads -bcl 'run swap.gs sst'
> 2. dtmi.sh bin2nc:sst
>
> Hope it helps.
>
> saji
> ...........
>
> Saji N. Hameed
> Assistant Researcher
> International Pacific Research Center, Tel: +1808 9569534
> 2525 Correa Road, Honolulu, HI 96822 Fax: +1808 9569425
> http://iprc.soest.hawaii.edu/~saji
>
> On Thu, 12 Jan 2006, Kate Young wrote:
>
>>
>> Can you please tell me if NCL supports either Vis5d or GrADS formats?
>>
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>>
>
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Received on Thu Jan 12 2006 - 19:43:27 MST