Latex Equations in iJulia (not printing)

[alexocampo907]

I'm having trouble getting my latex equations to display in print preview. Regular latex displays in print preview but when I try to use an equation such as \begin{align} it doesn't display (see attached screen shots).

Thank you for any help,

Alex

[Carreau]

That's most likely a bug in IPython. Can you try the 3.0 Rc release ? Does it do the same when you manually nbconvert --to html ?

[stevengj]

They can't try the 3.0 release until #224 is completed, no?

This seems like the same thing as JuliaCloud/JuliaBox#76

Is there an issue number or commit in IPython that we should link here?

[Carreau]

The kernel might start as Python, but the conversion to html/print preview should work.

[alexocampo907]

It is different to JuliaCloud/JuliaBox#76 because my latex actually shows up in the print preview. For instance if I type $\alpha$ in a markdown cell, it will display.

However if I try to use \begin{equation} or any other type of equation latex, it will show fine in the console and then not show in the print preview.

Carreau, how do I execute the manual nbconvert --to html?

[Carreau]

Carreau, how do I execute the manual nbconvert --to html?

Shoudl be :

$ ipython nbconvert --to html <your ipynb>

Should create an html file with the same name.

[alexocampo907]

Sorry for my technical illiteracy. But I triend the manual nbconvert and it gave me an error.

I set the working directory:
Alexs-MacBook-Air-2:Methods II alexocampo$ pwd
/Users/alexocampo/Documents/Harvard/Semester 2/Methods II

Then ran the code you mentioned:
Alexs-MacBook-Air-2:Methods II alexocampo$ ipython nbconvert --to html <HW 2 Methods.ipynb>
-bash: syntax error near unexpected token newline' >

[jiahao]

Replace the angle brackets with double quotes and try again.

[alexocampo907]

Thanks! The manual nbconvert worked but still no latex equations displaying :(

[stevengj]

@alexocampo907, I think nbconvert needs LaTeX (e.g. MacTeX) to be installed on your system for equation rendering (and for nice PDF output)?

[Carreau]

@alexocampo907, I think nbconvert needs LaTeX (e.g. MacTeX) to be installed on your system for equation rendering (and for nice PDF output)?

For Html it should still rely on mathjax.
I'm at Strata the next two days, but assigned that to me to have a look.

[alexocampo907]

Any progress on this issue?

It does use mathjax. I know this because I had to use the following stack exchange in order to get my regular latex (i.e. non equation latex) to show in the print preview.

[Carreau]

I would try IPython 3.0 RC, it seem to work (for me at least) on 3.0-dev, and there will most likely not be a bugfix on 2.x. I'll try on 2.x later.

[alexocampo907]

Sorry again for my technical illiteracy, but do I upgrade to IPython 3.0 RC by putting the following in the terminal?

pip install ipython --upgrade

[Carreau]

that shouLd work, if it does not force the version with pip install ipython==3.0.0rc1

[jiahao]

Works for me in 3.0.0rc1 also.

[Carreau]

Works for me in 3.0.0rc1 also.

Great ! Seem like 3.0 will be a good release !

[alexocampo907]

ok guys BIG PROBLEM now. I installed the latest version of Ipython using the instructions above, but now my IJulia won't open! See attachement for the error:

Any idea why this is happening?

[Carreau]

can you get the full command line, and/or try the command line directly ( ipython notebook)?

[Carreau]

And also:

Oh, you are a R user, do you know there is an R Kernel too.

[Carreau]

Without the full traceback, I would try nuking ~/.ipython/profile_julia away (or temporary move it somewhere else). The issue a Pkg.build("IJulia") to recreate it.

[alexocampo907]

Thanks for your quick help!

I was able to get the notebook to start by doing
pip install jinja2 tornado pyzmq --upgrade
and
pip install jsonschema

but now when I am inside looking at my file all I see is a blank file (attached)

Thanks for the tip about the R kernel too!

[Carreau]

Force refresh page a few time (Cmd-Shift-R)
If does not work
Open JS console. (Cmd-Alt-J) see it error.
Retry force refresh (Chrome is stubborn)

This is typical of cached Javascript from IPython 2.0, or custom.Js not upgraded.

[jiahao]

I had this problem too. Please update IJulia with Pkg.update() and try again. v0.2.0 was tagged very recently.

[Carreau]

pip install jinja2 tornado pyzmq --upgrade

And you should not have to do that, it means that IPython was not installed previously with pip install ipython[all]. But I guess this is due to you using conda, with which I'm not super familiar with.

[alexocampo907]

Ok progress! I reinstalled and updated the IJulia package like you all said and now I am seeing my work again! THANK YOU THANK YOU THANK YOU!

However, now I am having an issue while trying to print (attached)

[Carreau]

No module named mistune is self explanatory, you are missing it, you need to pip-install it.

try pip install ipython[all]==3.0.0rc1 (with or without the ==3.0.0rc1 depending on what you did earlier), it will reinstall IPython making sure you have all dependencies.

[alexocampo907]

Ok, I tried pip install ipython[all]==3.0.0rc1 and I am still having the same problem:

Could not import nbconvert: No module named mistune

[alexocampo907]

Working!! I did:

pip install mistune

now everything is working (including equation Latex) and I think we can say that this issue is closed! Thank you to everyone who helped out and my apologies again for my lack of knowledge with IPython.