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  • Nov 09 2020 13:10
    labarba closed #217
  • Nov 09 2020 12:27
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  • Dec 22 2019 20:45
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  • Aug 30 2018 20:53

    labarba on format

    (compare)

Lorena A. Barba
@labarba
The numbers sometimes don't show up … but they should. We enabled them with some javascript in the notebook style, and some browsers don't show them. Do you not see them when opening on nbviewer or locally?
Chris Short
@ChristopherShort
Perhaps I spoke a little early: loading the notebook's style sheet is in the last cell, and does number the equations - but not completely. Reloading the notebook (or restarting the kernel) does number all equations except the first ones for lift and drag - and so numbering in the discussion appears to be out by 2 (eg what I believe are equations (15) and (16) and labelled (13) and (14) in my local notebook.
Lorena A. Barba
@labarba
Yes, it looks like the equation numbers appear correctly on the nbviewer version, but locally, each time you execute the markdown, it increases the numbers by one.
Chris Short
@ChristopherShort
And looking at the nbviewer version, none of the maths is being rendered at all for me - the mathjax(?) is left raw. I'm on Safari/Mac OX if it matters...but don't think I've seen this as a problem before.
Yes - if you repeatedly run the stylesheet - it increments equation numbers but, for me, fails to label first two equations always.
Lorena A. Barba
@labarba
The fact is, equation numbers are not supported in the IPython Notebook. We decided to hack it with javascript in the style sheet
The other problem of MathJax rendering, yes, it sometimes happens and I don't know why. Cache stuff?
Lorena A. Barba
@labarba
Can you try opening the nbviewer on a new browser window in "private" mode (will not have any history)
FredInChina
@ReblochonMasque
I've always found it was a rather bad idea to "hack" the framework... I'd very much rather work with the plain vanilla notebook rather than see everything break the moment there is a small update. :)
Lorena A. Barba
@labarba
We had a colleague read over the notebooks for friendly review and they insisted on having equation numbers. So we researched and found a way to add them.
FredInChina
@ReblochonMasque
Yes, last sec requirements & changes of scope... I know... LOL
No worries, at some moment it'll work
Lorena A. Barba
@labarba
The issue of MathJax not rendering is something that I can't figure out.
Chris Short
@ChristopherShort
yes - private browsing labelled ALL equations correctly and rendered MathJax! Interesting (in a sad way)
FredInChina
@ReblochonMasque
Yes, that happens too... it has always been temporary for me & I've blamed it on either the network or my VPN, but maybe there is another issue.
Usually, reloading the notebook solves it. I stopped using safari for many small blips like this.
Lorena A. Barba
@labarba
YIkes! We're on to something, ChristopherShort
FredInChina
@ReblochonMasque
I am using chrome exclusively for the notebooks now - Firefox seems to leak memory with notebook.
Lorena A. Barba
@labarba
I thought Firefox leaked memory with anything.
FredInChina
@ReblochonMasque
hehehe, maybe :)
BTW, all the posts I made on the forum last night (8 hours ago are gone...
it doesn't work as I thought after all.
Lorena A. Barba
@labarba
Wow. Discussion page is totally buggy.
Nothing to do for the moment. Devs said they'd build a new instance of Open edX from scratch an migrate the course
The edX guys push to their repo willy-nilly, I'm afraid.
FredInChina
@ReblochonMasque
That doesn't sound too good...
I am sorry to hear all the problems you have to deal with
on top of a first offering of the course (
Lorena A. Barba
@labarba
No. That's why there aren't other universities in the US —except for Stanford— launching their own instances. What we did is totally crazy.
And who knows how many engineers are working in Stanford Online.
FredInChina
@ReblochonMasque
Yes, I agree. That's why I love it so much already... there is a sort of aura that goes with this kind of kraziness :D
Lorena A. Barba
@labarba
I hope we recover the students once the discussion board is back up. It's eerie to have things go quiet.
Email didn't work either and I had to go MailChimp!
We don't give up, though.
FredInChina
@ReblochonMasque
Yes, we'll be there, no worries - How can we help?
Lorena A. Barba
@labarba
Just keeping the conversation going in whatever platform we can get hold of!
FredInChina
@ReblochonMasque
Can do!
Thanks for all your efforts labarba, it is verrry wonderrful :)
Lorena A. Barba
@labarba
OK, guys, I'm logging out. Hasta la vista!
Chris Short
@ChristopherShort
re using Chrome...but then I'd have to finally create a config file (waiting until Matplotlib accepts them easily before doing so) Some in the class already struggling without challenges of creating config file. But will go where the good professors set requirements :-). And Lorena - thanks - you seem to be going above call of duty for this course.
FredInChina
@ReblochonMasque
GTG now, I'll check back in later.
Lorena A. Barba
@labarba
Thanks ChristopherShort. Hope to see you in the discussion board, if it ever resuscitates
FredInChina
@ReblochonMasque
I must be dense, but I can't find a link to download Lanchester's "Aerodonetics" pdf... any help?
Ashutosh Purushottam
@apurushottam
This is interesting !!
Hal Snyder
@DrXyzzy
Ashutosh Purushottam
@apurushottam
Thanks DRXyzzy :) .. the link is working
FredInChina
@ReblochonMasque
Wonderful, thanks DrXyzzy. :)
scshepard
@scshepard
I borrowed this tweet, so not sure if will help/address the MathJax issues:Scott Hanselman @shanselman · Jun 23
Exploring cross-browser math equations using MathML or LaTeX with MathJax http://hnsl.mn/1j8H5u5
Gregorio
@jgfdsa
HI! I'm starting with this great course... does anyone know if its possible to get a certificate or Statement of Accomplishment?. Thanks in advance and cheers!
Lorena A. Barba
@labarba
We were not planning to give a certificate at the end of the course, but are willing to reconsider this question later.