changing values/updating a variable in a netcdf file

[jbensabat]

Hello
I am trying to update a variable that has 4 dimensions (one of them NC_UNLIM) using the c version.
I get the values into a array (values)
then make changes to the to the array
when I try to write back the variable values to the netcdf file I get an error -101
Is it a limitation of netcdf or an error that I am making ?
thanks
jac

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[WardF]

Error -101 indicates an error at the HDF5 layer; it's not more specific, because it reflects an issue where libhdf5 has only told us "something went wrong" without additional detail. Can you provide a snippet of the code you're using? Perhaps something will stick out, because you should be able to do what you have described.

[jbensabat]

Hi
I found the cause of the problem. In order to update a variable I need to open the nc file NC_WRITE mode.
I won't do this error again but would it be possible to check this when attempting to write to an nc file (checking if the file was open in the correct mode)
best
jac

[WardF]

It seems like it should be a thing we can do. @DennisHeimbigner am I overlooking something simple, or a reason why we aren't doing this already?