Jeff Whitaker

create separate low-level interface

1

@shoyer has suggested creating separate low and high level interfaces, similar to what h5py has now. The high-level interface would be what we have now, but the low-level interface would...

segfault in filepath Dataset method on some platforms

9

reported by @ocefpaf, see https://github.com/conda-forge/staged-recipes/pull/43 Can be triggered (on some platforms) with ``` import netCDF4 url = 'http://test.opendap.org:80/opendap/data/ncml/sample_virtual_dataset.ncml' nc = netCDF4.Dataset(url) assert nc.filepath() == url # segfault here with version...

I've heard from a number of python (and fortran) users over the years regarding the lack of a fixed-length string datatype in netcdf. I created a netcdf-c ticket (https://github.com/Unidata/netcdf-c/issues/132) requesting...

configure fails on older versions of Linux for netcdf-c-4.9.0

5

This is on NOAA's HPC system (hera), which I believe is CentOS. In config.log I see: ``` configure:22699: checking size of off_t configure:22704: gcc -o conftest -fno-strict-aliasing -I//scratch2/BMC/gsienkf/whitaker/conda-envs/mpi4py/include -L/scratch2/BMC/gsienkf/whitaker/conda-envs/mpi4py/lib conftest.c...

feature request - longdouble float type

1

When dealing with times using [cftime](https://github.com/jswhit/cftime), it is often a requirement to be able to convert a time value to a date and back again with microsecond accuracy. This is...

what to do when a variable is sliced with an all False Boolean index array?

4

Current behavior: 1) for a 1D variable an empty array is returned 2) for multi-dim variables an opaque exception is raised. 3) for numpy arrays, an empty array is always...

return empty array if boolean index array is all False

1

alternative to PR #1197

error renaming a variable in a group

6

Reported in https://github.com/Unidata/netcdf4-python/issues/999. Here's a simple C program that triggers the `HDF Error`. The rename only fails if the file is closed and then re-opened. ```c #include #include #include #define...

compression parameters in &mpp_io_nml ignored by atmospheric component

6

If input.nml contains ``` &mpp_io_nml shuffle=1, deflate_level=1, / ``` the size of the ocean restarts is reduced by about 50%, but the the atmospheric restarts are unaffected. to reproduce, run...

Read/update model states in native (sigma) coordinates

10

In order to use neuralgcm for data assimilation, we need access to the model variables on sigma levels (plus surface pressure). The `api.PressureLevelModel` provides access to decoded data on pressure...