"Error: using netcdflib 'dimids' should be double precision" when trying to create variable in NetCDF file

I'm trying to create a NetCDF file of some timeseries data. I've successfully defined the dimensions and global attributes for my data, but when I try to write my first variable, I get: Error using netcdflib 'dimids' should be double precision.

This is the code I have written to create the variable, and it's the third line that produces the error:

netcdf.reDef(ncid);
nccreate('TVC_Jan2018.nc','Shortwave');
varid = netcdf.defVar(ncid,'Shortwave','double',['lon',1,'lat',1,'time',744]);
nccreate(ncid,varid,'Dimensions',{'lon',1,'lat',1,'time',sz},'Format','classic','Datatype','double');
netcdf.putAtt(ncid,varid,'long_name','Incoming Shortwave Raditation');
netcdf.putAtt(ncid,varid,'units','W m^–2');
netcdf.putAtt(ncid,varid,'mode','time varient');
for t = 1:sz
ncwrite('TVC_Jan2018.nc','Shortwave',MetData_Jan(t,5));
end
netcdf.endDef(ncid);    

I've googled and the default precision for numbers in Matlab should be double, so I have no idea where this error is coming from.

[Nitish Nalan]

Hi Victoria,

Could you please try the script mentioned below, and let me know if this helps you.

clc
clear
lon = 1;
lat = 1;
time = 744
mcid = netcdf.create('Example_test.nc','NC_WRITE');
dimLon = netcdf.defDim(mcid,'lon',lon);
dimLat = netcdf.defDim(mcid,'lat',lat);
dimTime = netcdf.defDim(mcid,'time',time);
varid = netcdf.defVar(mcid,'Shortwave','NC_DOUBLE',[dimLon dimLat dimTime]);
netcdf.endDef(mcid);
ncdisp('Example_test.nc');

[Victoria Dutch]

Sorry for taking an age to reply - that code does work. How would I then fill "Shortwave" with the information I want it to contain?

I thought I'd managed to fix this, but what I had created was a 744x1x1 nc file, rather than 1x1x744, so the model I need to use it in is not a fan.