def _compare_raster_meta(a, b):
    """Evaluate if the two raster meta dictionaries are equal."""
    keys = a.keys()
    if keys != b.keys():
        # The keys should always be the same...
        # these dicts are generated from `_extract_raster_meta`
        return False
    for k in keys:
        if a[k] != b[k]:
            return False
    return True