names(nc) not working

[ezaron]

I'm running julia 1.5.3.

The documentation says there is a NetCDF.names function which pull varnames out of an NcFile handle.

In the REPL:

using NetCDF fx = "./patchdef.nc" nc=NetCDF.open(fx,mode=NC_NOWRITE,readdimvar=true) names(nc)
ERROR: MethodError: no method matching names(::NcFile)
Closest candidates are:
names(!Matched::Module; all, imported) at reflection.jl:98
Stacktrace:
[1] top-level scope at none:1

I can see that nc is populated with header information, but I do not see how to get a list of varnames or dimensions.

[meggart]

Thanks for the report, the documentation seems to be outdated here. For now you can use keys(nc.vars). In general, since the NetCDF.NcFile itself behaves like a dictionary, I think overloading Base.keys should be the way to go instead of providing a new function. I have created this PR #143 to fix the documentation.

[ezaron]

Thanks, Fabian.

I used keys(nc.vars), but I had to go through some gymnastics to convert a key to a string. It was not as straightforward as I imagined.

-Ed

On 2/23/21 1:20 AM, Fabian Gans wrote:

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Thanks for the report, the documentation seems to be outdated here. For now you can use |keys(nc.vars)|. In general, since the NetCDF.NcFile itself behaves like a dictionary, I think overloading |Base.keys| should be the way to go instead of providing a new function. I have created this PR #143 https://github.com/JuliaGeo/NetCDF.jl/pull/143 to fix the documentation.

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Edward D. Zaron
Associate Professor (Senior Research)
College of Earth, Ocean, and Atmospheric Sciences
Oregon State University
edward.d.zaron@oregonstate.edu