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v923z / micropython-ulab

a numpy-like fast vector module for micropython, circuitpython, and their derivatives
https://micropython-ulab.readthedocs.io/en/latest
MIT License
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[BUG] IndexError: indices must be integers, slices, or Boolean lists #646

Closed raghunila closed 1 month ago

raghunila commented 1 year ago

Describe the bug built from main branch Issue is while rearranging 2 dimensional array, giving below error IndexError: indices must be integers, slices, or Boolean lists but works good with python 3.2 and numpy package

from ulab import numpy as np
from time import sleep

res = []
for i in range(10):
    res.append(np.arange(10 * i, 10 * (i + 1)))
res = np.array(res,  dtype=np.uint8)
res1 = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9, 0],  dtype=np.uint8)
print(res)

print(res[:, res1])

print(ulab.__version__)

To Reproduce run this python console with ulab build

Expected behavior columns should re arrange.

Additional context

v923z commented 1 year ago

I don't see what the problem is. You're trying to index by an ndarray. The IndexError tells you that that is not an accepted type. Implementing all aspects of numpy indexing is highly non-trivial, consumes a lot of flash space, and RAM. For that reason, you can't do everything that you can do in numpy.

v923z commented 1 month ago

I think https://github.com/v923z/micropython-ulab/tree/take addresses the issue raised here, so I'll close this, once take is merged into master.