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Detexify: LaTeX handwritten symbol recognition (2009) (detexify.kirelabs.org) similar stories update story
144 points by lohfu | karma 138 | avg karma 2.76 2020-02-18 08:39:39 | hide | past | favorite | 31 comments



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Daniel is a bright guy and was always fun to work with. Great to see that this project of his keeps getting recognition even years after its creation.

Hehe... hi Lars, long time no "see" ;-) Yes, he is and I was also very happy to see the project getting mentioned here! I used it myself and was always impressed about it!

What is this, class reunion? :D Cheers guys

- padde


Definitely class reunion :D

Omg I just created an account to reply... ;)

Detexify is amazing! It's one of the most popular tips when we give tutorials or workshops on LaTeX :)

Firefox shows 344 visits to this page :) Thanks for saving me the trouble to awkwardly describe the symbol I in order to google it.

Excellent tool! Used it heavily while writing my lecture summaries during my studies.

Also, interesting to know: the backend was re-written in Haskell at one time; it gets mentioned in Daniel's thesis [0]

http://danielkirs.ch/thesis.pdf


Same. It only failed me once, in a logic lecture. I complained out loud, and the lecturer kindly answered the command is \parr

Do many people use LaTex for notes?

I’ve considered using it for my notes on my iPhone/iPad. At the moment, I’m using Markdown but for a few things, LaTex would be better.


Doing your notes fully in LaTeX would be hell without some convenience macros, etc. Yet I'm sure plenty swear by it.

I use org mode + LaTeX. You can enter LaTeX equations in org mode. This combination works really well.


> Doing your notes fully in LaTeX would be hell without some convenience macros, etc.

Part of doing your notes in LaTeX is setting up a healthy suite of convenience macros—or did you mean non-LaTeX macros?


I've written notes during the lecture at the same speed as the lecturer with Word 2007 in the last year I had math in uni. This worked surprisingly well since Word's math typesetting requires a lot fewer \ and {} than LaTeX and you immediately see what your current equation looks like, eliminating a lot of guesses around proper bracketing, etc.

With pure LaTeX I think I couldn't have done it, despite being somewhat proficient with the language.

(I've scribbled diagrams and other images by hand and done them properly at home, but the text and math parts went fairly well in real time.)


What does fucking word has to do with latex my nigger? Best of two separate worlds? Jesus fuck man. Hope your fucking docx es burn in hell. Fucking degenerate my man. All respects though.

I did a math-heavy degree, so most of my lecture summaries were all written in LaTeX due to the nature of the content (lots and lots of equations; I published most of my lecture summaries on my homepage). For a few other lectures I used Open Office / Word quite regularly (adding and placing images, and working with tables -- e.g. to picture an array -- was easier for me to accomplish with such a WYSIWYG editor).

Also, a cool thing about LaTeX is that your document source is written in plain text, so you can use git to version your source files.

Funny side note: I was using LaTeX so much during my studies that I wrote a Greasemonkey script to actually extract the LaTeX source behind equations shown on Wikipedia [0]; the equation's LaTeX source is stored in the <img> tag's alt attribute.

[0] https://github.com/giu/wikipedia-tex-source-extractor


I've live-TeXed (that is writing notes in real time during a lecture with LaTeX) before way back in college during math lectures.

It was a so-so experience. Math lectures for me require a lot of thought to follow otherwise I quickly become lost (often I'm lost even if I try to follow along) and the added mental overhead of TeXing on the fly often times pushed me away from actually understanding what was happening in the moment. Instead I'd have to review my notes after lecture to understand what was going on. LaTeX's batch compilation was especially infuriating, because a single error could cause the whole document to stop compiling and then if I didn't have the time to correct it, it meant the rest of the lecture was going to be visually represented with an editor and only after the lecture would I go back and correct the error.

On the upside it was way easier to go back and review my notes/make them presentable for others. Also, similar to the Matrix, after a while you become familiar enough with LaTeX that you don't need the rendered display anymore to read what's going on, so the non-compiling part becomes less of a problem.


I use markdown with $\latex code in dollar signs$. With pandoc this actually works. https://pandoc.org/MANUAL.html#math

The service seems to be down...

I've used Mathpix in the past for converting math formulas into Latex with great success.

https://mathpix.com/


Great LaTeX tool but oh dear:

"Your connection to this site is not secure"

You probably need to cover the "I want to use this site without anyone MITMing me" use-case with Let's Encrypt, but you probably already knew that.


Oh the faggot doesn't even use secure connections, fucking faggots my niggers.

What information is one providing that should be private?

As always, encryption everywhere even for not private information avoids showing you want to hide something when you do have a private interaction.

Https also makes it more difficult for someone in the middle to temper with the contents, e.g. adding malware.


“Detexify” should probably be added to the title. I thought it would be something new and was wondering what this would solve that Detexify couldn’t.

Detexify is a trusty tool I’ve taken for granted for almost a decade. Saved me a lot of searching countless times. (Apparently I can’t recognize the domain, though.)


Added. Thanks!

Great project

I don't get it. Where are the neural networks?


This has saved me many hours of searching for LaTeX symbols when I was in University.

My question is, where's the unicode equivalent of this? :)

Google (Docs, Sheets, Slides, etc) actually has this built in. It’s under the “insert symbol” menu item

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