Hello Lester ,
As explained in the ncwrite() help page, you have to create first the
variable with nccreate() before writing it.
As Hy is probably a matrix, you may have to specify also its dimensions
as argument of nccreate(). And eventually its type, if it is not double.
See the documentation for help.
About your script:
ncwrite(filename, 'Hilb_Hy','Hy')
With this, you write the string 'Hy' into the variable 'Hilb_Hy', I
don't think that's what you want to do.
Regards,
Simon
Le 05/02/2016 11:31, Lester Anderson a écrit :
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
<[email protected]> 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 <[email protected]>
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
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Thanks and Regards
Harpreet Singh
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