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import netCDF4
import numpy as np
complex_array = np.array([0 + 0j, 1 + 0j, 0 + 1j, 1 + 1j, 0.25 + 0.75j], dtype="c16")
np_dt = np.dtype([("r", np.float64), ("i", np.float64)])
complex_struct_array = np.array(
[(r, i) for r, i in zip(complex_array.real, complex_array.imag)],
dtype=np_dt,
)
print("\n**********")
print("Reading a file that uses a dimension for complex numbers")
filename = "complex_numbers_as_dimension.nc"
with netCDF4.Dataset(filename, "w") as f:
f.createDimension("x", size=len(complex_array))
f.createDimension("complex", size=2)
c_ri = f.createVariable("data_dim", np.float64, ("x", "complex"))
as_dim_array = np.vstack((complex_array.real, complex_array.imag)).T
c_ri[:] = as_dim_array
with netCDF4.Dataset(filename, "r", auto_complex=True) as f:
print(f["data_dim"])
print("\n**********")
print("Reading a file that uses a compound datatype for complex numbers")
filename = "complex_numbers_as_datatype.nc"
with netCDF4.Dataset(filename, "w") as f:
f.createDimension("x", size=len(complex_array))
nc_dt = f.createCompoundType(np_dt, "nc_complex")
breakpoint()
c_struct = f.createVariable("data_struct", nc_dt, ("x",))
c_struct[:] = complex_struct_array
with netCDF4.Dataset(filename, "r", auto_complex=True) as f:
print(f["data_struct"])
print("\n**********")
print("Writing complex numbers to a file")
filename = "writing_complex_numbers.nc"
with netCDF4.Dataset(filename, "w", auto_complex=True) as f:
f.createDimension("x", size=len(complex_array))
c_var = f.createVariable("data", np.complex128, ("x",))
c_var[:] = complex_array
print(c_var)
with netCDF4.Dataset(filename, "r", auto_complex=True) as f:
print(f["data"])
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