loadNpz

swordfish.function.loadNpz()

Read an npz binary file from Python NumPy and convert it into DolphinDB objects. NaN in .npz file is converted into null values in DolphinDB.

Conversion Table for Python np.array and DolphinDB Objects:

NumPy array	DolphinDB Objects
one-dimensional	vector
two-dimensional	matrix
three-dimensional	tuple (where each element represents a matrix)

Data types supported for conversion are: BOOL, CHAR, SHORT, INT, LONG, FLOAT, DOUBLE and STRING (only one-dimensional array is supported).

Parameters:

filename (Constant) – A STRING indicating the path of .npz file.