CDF Format

Read NASA Common Data Format (CDF) files as one dict per record index across variables.

Overview

Property	Value
Format id	cdf
Class	CDFIterable
Extensions	.cdf
Read	Yes
Write	No
Extra	cdf (spacepy / NASA CDF C library)
Maturity	stable

Record shape

Keys are CDF variable names; values are Python scalars or lists:

{"Epoch": "...", "VariableA": 1.2, "VariableB": [0.0, 1.0]}

Use list_tables() for variable names. Requires a filename (or a named file object). Also needs the NASA CDF C library; see https://cdf.gsfc.nasa.gov.

Usage

from iterable import open_iterable

with open_iterable("data.cdf", format="cdf") as source:
    print(source.list_tables())
    for row in source:
        print(row)

Install with pip install iterabledata[cdf].

See also

• NetCDF — NetCDF scientific arrays
• Supported formats