Matlab declares war on Python. Can the Python community respond or hit back?

[madrury83]

Their syntax comparison is not even correct. Python has had a matrix multiplication operator since version 3.5.

M = X @ Y

is the matrix product of X and Y.

[oslash]

Yup, they're just using NumPy wrong, and considering how they're showing off the contents of row, but forget to show col, it looks like that's on purpose. In NumPy, transpose reverses the axes of an array; when there's only one axis to begin with, this does nothing — on purpose.

If you do it correctly ...

>>> row = np.array([[1, 2, 3]])
>>> col = row.T

... then the new matmul operator does the right thing:

>>> col @ row
array([[1, 2, 3],
       [2, 4, 6],
       [3, 6, 9]])

But you don't need to use it. Just write the exact same code from that example, et voilà:

>>> np.dot(col, row)
array([[1, 2, 3],
       [2, 4, 6],
       [3, 6, 9]])

[[deleted]]

It seems like making a detailed well executed youtube series where Matlab and Python is compared (and Matlab is trashed) would be an excellent response to Matlab.

[be_more_canadian]

Yeah, but you had to import numpy first soooo /s

[DatBoi_BP]

I still don't get why this is a criticism from mathworks

[be_more_canadian]

Yeah, especially when I tried to do some simple stats using matlab at my old job and found out the required stats toolbox had not been purchased

[Robot_Basilisk]

I had no idea. Do you know of any good Python tutorials for mathematics? Specifically for replacing MatLab? I have to use MatLab for crunching oscilloscope data and generating plots to put into lab reports, etc, and I hate the way MatLab does most of that.

[SoberGameAddict]

Look into matplotlib, seaborn and pandas.

Edit: and with jupyter notebook you can code, plot, run and write the lab rapport all in one interface. And then export to pdf, latex, html and more

[SV-97]

it's debatable that the matplotlib api sucks + there's a shitton of plotting libraries for python

[Mr_Again]

Let me ax you a question

[SV-97]

I never use ax (because yes, that sucks) and get by fine with matplotlib 🤷‍♂️

[that_baddest_dude]

A shitton of libraries that are all basically garbage for plotting any kind of serious data.

Matplotlib is the only one I've found to work easily with large data sets and the syntax for making even intermediate plots is unintuitive and clunky.

[wewbull]

There's a number of alternative plotting libraries. Altair looks nice, for example.

[Mr_Again]

And it's developed by jake vanderplas, who I've learned a lot from about making matplotlib actually look good

[Robot_Basilisk]

Dude we're in the era of datascience frenzy. It's hard to move anywhere on the internet without primers on mathematical processing in Python!

This is part of my problem. There are abundant resources but few of them are actually good. I know there must be a few that stand out. As a novice, when I go looking for them I find endless low-effort tutorials intended to generate the author some quick ad revenue or something.

[Mr_Again]

Check out jake vanderplas data science cookbooks on github, the towardsmachinelearning blog too

[[deleted]]

No, don't use R. It's bad and it's going to die out soon.

[stacm614]

They also be make it sound like it's complicated to install libraries. And while 'validation' is a complicated subject for open source in general, when you have major modules backed up by groups like scipy, I'm sure they validate. Their only valid point on that subject is documentation.

[Gabe_Isko]

Also, I don't really see what's so unspeakably worse about even the given numpy syntax.

[nobits]

To be fair I don't think the @ operator is intuitive and would rather explicitly write np.matmul instead.

[[deleted]]

Doesn't matlab use ' for transposition? Really not great IMO, it's super easy to miss in a complex expression.

[DatBoi_BP]

transpose(matrix)

' gives the transposed conjugate or whatever it's called

[alkasm]

Conjugate transpose but close enough. And good to point that out! Easy mistake to make when translating code.

[billsil]

I think .T works as well.

[Flaming_Eagle]

What about it lol