[Scilab-users] Using Scinetcdf module

[Lester Anderson]

Hi Simon,

Hy is a matrix and the input grid used has dimensions of 601 x 601
(x,y). Reading the data in is fine and the matrix is as expected in
the variable browser.

grav = ncread(source,'z') is all fine with a 601 x 601 matrix

Create variable Hilb_Hy:

nccreate(filename,'Hilb_Hy','Dimensions',list('r',601,'c',601))
                                                                !--error 999
nccreate: nc_def_var() returned the error -42: NetCDF: String match to
name in use.

Do you have an example grid to test the read and write function.

Would it help to send you a copy of the grid file?

Thanks

On 5 February 2016 at 10:46, Harpreet Singh Rathore
<harpreet.mertia at gmail.com> wrote:
> Hey
>
> You have not created the variable in the file. First you have to create a
> variable in the following file using the command nccreate(filename,
> 'Hilb_Hy', 'Dimensions', list('r', no_row, 'c', no_column); after that you
> can pass the ncwrite command and you have to pass like this
> ncwrite(filename, 'Hilb_Hy',Hy) as Hy is a matrix.
>
> Regards
> Harpreet Singh
>
> On Fri, Feb 5, 2016 at 4:01 PM, Lester Anderson <arctica1963 at gmail.com>
> wrote:
>>
>> Hello Harpreet,
>>
>> I altered the code a bit but still get a problem
>>
>> Hy = hilbert(grav);
>> filename = fullfile('Q:\geophys\Gz_Hy.grd') // set output filename
>> // ncwrite(filename, varname, vardata, [start, [stride]])
>> ncwrite(filename, 'Hilb_Hy','Hy') // write variable Hilb_Hy with data from
>> Hy
>>
>> Error message:
>>
>> ncwrite(filename, 'Hilb_Hy','Hy') // write variable Hilb_Hy with data from
>> Hy
>>                                   !--error 999
>> ncwrite: nc_inq_varid() returned the error -49: NetCDF: Variable not
>> found.
>> at line       6 of exec file called by :
>> exec('Q:\geophys\Lester\SCILAB_work\netcdf1.sce', -1)
>>
>> In this case I want to define a variable name Hilb_Hy (although can
>> use any name really) in the netCDF file and write the output of the
>> Hilbert (Hy) transform.
>>
>> Cannot see the solution
>>
>>
>>
>> On 5 February 2016 at 10:15, Harpreet Singh Rathore
>> <harpreet.mertia at gmail.com> wrote:
>> > Dear Lester,
>> >
>> > As I can see the error is saying minimum 3 inputs are required. And
>> > after
>> > going through the help of the following function, you also have to pass
>> > the
>> > value which you have to store in the 'Hy'. You can go through the help
>> > files
>> > of ncwrite by typing help ncwrite in the console.
>> >
>> > Regards
>> > Harpreet
>> >
>> > On Fri, Feb 5, 2016 at 3:18 PM, Lester Anderson <arctica1963 at gmail.com>
>> > wrote:
>> >>
>> >> Hello all
>> >>
>> >> I am looking to use the sciNetCDF module to work with GMT grid files
>> >> but have some issues.
>> >>
>> >> Reading a GMT grid is not a problem as far as I can tell, so the
>> >> following does read the file (and z variable), storing the values in
>> >> the grav array:
>> >>
>> >> source = fullfile('Q:\geophys\Gz.grd')
>> >> grav = ncread(source,'z')
>> >> Hy = hilbert(grav); // write Hy variable to new file
>> >>
>> >> I am having problems with writing out the processed data e.g write a
>> >> new grid (Gz_Hy.grd) with the Hilbert transform solution
>> >>
>> >> filename = fullfile('Q:\geophys\Gz_Hy.grd')
>> >> ncwrite(filename, 'Hy') // does not work
>> >>
>> >> Error return:
>> >>
>> >> ncwrite(filename, 'Hy')
>> >>                        !--error 77
>> >> ncwrite: Wrong number of input argument(s): 3 to 5 expected.
>> >> at line       5 of exec file called by :
>> >> exec('Q:\geophys\Lester\SCILAB_work\netcdf1.sce', -1)
>> >>
>> >> Any advice would be appreciated.
>> >>
>> >> Thanks
>> >> Lester
>> >> _______________________________________________
>> >> users mailing list
>> >> users at lists.scilab.org
>> >> http://lists.scilab.org/mailman/listinfo/users
>> >
>> >
>> >
>> >
>> > --
>> > Thanks and Regards
>> > Harpreet Singh
>> >
>> > _______________________________________________
>> > users mailing list
>> > users at lists.scilab.org
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>> >
>> _______________________________________________
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>
>
>
>
> --
> Thanks and Regards
> Harpreet Singh
>
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