netcdf_open mode

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Dear Sir/Madam,

This is Xuelei Feng. I am to add a new dimension to an existing NetCDF
file. I used netcdf_open(filename,'NC_WRITE') to open the file, and then
used netcdf_defDim(ncid, 'my_dim', 50). to define a new dimension. However,
an error "NetCDF: Operation not allowed in data mode" arose when I ran the
commands. I think that is because I didn't use the correct mode. I used the
"help" command to search. It doesn't show the mode options. What mode
should I use for this case? And how can I find the mode options?

Thanks in advance,
Xuelei

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<div dir=3D"ltr"><div>Dear Sir/Madam,</div><div><br></div><div>This is Xuel=
ei Feng. I am to add a new dimension to an existing NetCDF file. I used net=
cdf_open(filename,&#39;NC_WRITE&#39;) to open the file, and then used netcd=
f_defDim(ncid, &#39;my_dim&#39;, 50). to define a new dimension. However, a=
n error &quot;NetCDF: Operation not allowed in data mode&quot; arose when I=
 ran the commands. I think that is because I didn&#39;t use the correct mod=
e. I used the &quot;help&quot; command to search. It doesn&#39;t show the m=
ode options. What mode should I use for this case? And how can I find the m=
ode options?</div><div><br></div><div>Thanks in advance,</div><div>Xuelei</=
div><div>=C2=A0<br></div></div>

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