Re: [ferret_users] netcdf error code 57

[saurabh rathore <rohitsrb2020@xxxxxxxxx>]

Hi Ryo,

Thank you for your reply just now I ran the code again and saved the NetCDF files and they are looking good without the error. I do not understand was it due to the ferret crashing problem or related to saving the NetCDF but it is solved now. And interestingly after generating the NetCDF file from ferret which shows the error works fine if I extract the variable and save it using CDO. So anyone facing such a problem can do either of these steps

(1) Close ferret and the related linux terminals and relaunch ferret

OR if the problem still persists

(2) Use CDO, extract the variable using "selvar" and save it into NetCDF (cdo -r -f nc4 selvar,variable_name input.nc output.nc)

Cheers, Saurabh

On Mon, Feb 21, 2022 at 7:47 AM Ryo Furue <furue@xxxxxxxxxx> wrote:

Saurabh,

 I am writing this email regarding a problem that I am running into as shown below

**netCDF error
             NetCDF: Start+count exceeds dimension bound (OPeNDAP/netCDF Error code -57)

Is it possible that the netCDF file is corrupted?  My best guess is that there are more gridpoints in the dimension variable than there are in the variable (array).  For example, say, your longitude grid has 100 points but your temperature field has only 50 points in the longitudinal direction . . .

The error message you quote above is from the netCDF library, which occurs when you try to access the index of a variable beyond the maximum.  But, what I don't know is, what makes Ferret do so.

It's not easy for me to test it because the main tools I use to create netCDF files (Ferret and Julia) avoid such inconsistencies in the first place.

Cheers,

Ryo

--

REGARDS

Saurabh Rathore

Research Scholar (PhD.)

Centre For Oceans, Rivers, Atmosphere & Land Science Technology

Indian Institute Of Technology, Kharagpur

contact :- 91- 8345984434