MATLAB: How to change or modify variable that already exists netcdf

ncwrite

i Want to 'nc_sst_with_cj' repalce oringal variable 'SST'.

both of them are same three dimensional.

My code is

nc=netcdf.open('F:\tt\wrflowinp_d01','write')

nc=ncwrite('wrflowinp_d01','SST','nc_sst_with_cj');

but show error

Too many output arguments.

Best Answer

There should be no output arguments for ncwrite. Check the documentation here.

The function call should be of the form

ncwrite(filename,varname,vardata);

Related Solutions

MATLAB: How to increase the maximum number of dimensions in a netCDF file in MATLAB 7.9 (R2009b)

The ability to increase NC_MAX_DIMS constant is not available in MATLAB 7.9 (R2009b).

Note that you can have multiple variables share one dimension, instead of specifying one dimension per variable. If you know what is the length of the longest vector you would like to put into the netCDF file, you can specify the dimension length to be at least as long as the length of the longest vector, or make a dimension unlimited, as in the example below:

nc = netcdf.create('testfile.nc', netcdf.getConstant('NC_CLOBBER'));
%%define unlimited dimension
unlim_id = netcdf.defDim(nc, 'unlim', netcdf.getConstant('NC_UNLIMITED'));
%%define variables x and y of unlimited dimension
varid1 = netcdf.defVar(nc, 'x', 'double', unlim_id);
varid2 = netcdf.defVar(nc, 'y', 'double', unlim_id);
netcdf.endDef(nc);
%%put data into the variables x and y
netcdf.putVar(nc, varid1,0,3, [1 2 3]);
netcdf.putVar(nc, varid2,0,100,rand(100,1));

MATLAB: Creating netcdf file error

Hello;

I'm leaving you an example.

I hope this is of some help.

Regards

Dave Correa

E-mail:correa.dave30@gmail.com

http://fismatlab.blogspot.com/

close all, clear all, clc
yearini=1960;
yearfin=1970;
%%--------------------
nt=144;
nx=1440;
ny=720;
lon=linspace(-180,180,nx);
lat=linspace(90,-90,ny);
time=1:nt;
[mlat,mlon]=meshgrid(lat,lon);
disp('Creando file Netcdf...')
filenc=['Data.nc'];
ncid = netcdf.create(filenc,'NC_WRITE');
% Crear dimensiones
dimid_lon = netcdf.defDim(ncid,'longitude',nx);
dimid_lat = netcdf.defDim(ncid,'latitude',ny); 
dimid_time = netcdf.defDim(ncid,'time',nt); 
% Crear variables y atributos
varid_lon = netcdf.defVar(ncid,'longitude','double',dimid_lon);
netcdf.putAtt(ncid,varid_lon,'long_name','Longitude')
netcdf.putAtt(ncid,varid_lon,'units','degrees_east')
% 

varid_lat = netcdf.defVar(ncid,'latitude','double',dimid_lat);
netcdf.putAtt(ncid,varid_lat,'long_name','Latitude')
netcdf.putAtt(ncid,varid_lat,'units','degrees_north')
%
varid_time = netcdf.defVar(ncid,'time','double',dimid_time);
netcdf.putAtt(ncid,varid_time,'long_name','Time')
netcdf.putAtt(ncid,varid_time,'units','Months since 1960-01-01 00:00:00')
% 
varid_prec = netcdf.defVar(ncid,'prec','double',[dimid_lon,dimid_lat,dimid_time]);
netcdf.putAtt(ncid,varid_prec,'long_name','Variable')
netcdf.putAtt(ncid,varid_prec,'units','mm')
netcdf.putAtt(ncid,varid_prec,'missing_value',-9999)
netcdf.endDef(ncid)
% % % Agregar datos de coordenadas
netcdf.putVar(ncid,varid_lon,lon);
netcdf.putVar(ncid,varid_lat,lat);
netcdf.putVar(ncid,varid_time,time);
m=1;
for year=yearini:yearfin   
for mes=1:12    
netcdf.putVar(ncid,varid_prec,[0 0 m-1],[nx ny 1],tmp);
m=m+1;
end
end
netcdf.close(ncid)

Best Answer

Related Solutions

MATLAB: How to increase the maximum number of dimensions in a netCDF file in MATLAB 7.9 (R2009b)

MATLAB: Creating netcdf file error

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