Good work! Is the code available?
Convert hand drawn equations to LaTeX
31–40 of 46 posts
Re: Convert hand drawn equations to LaTeX
#32On a somewhat related note, does anyone have any particularly nice ways of writing math-related notes? Part of me wants to just hand-write them and then maybe scan them, but that's not searchable/indexable, and doesn't lend itself well to version control. Writing in TeX or LaTeX would make them searchable/indexable, but this seems a little heavyweight for just notes (like answers to exercises). I don't use TeX/LaTeX…
Part of me wants to just hand-write them and then maybe scan them, but that's not searchable/indexable, and doesn't lend itself well to version control.
I'll comment as someone who does hand-write and scan my notes. I date and number every page, then put a pile through a sheet-feeding scanner every so often. Sometimes I put date and page numbers in my code comments, so I can find my notes on where the code came from. I also enter a line of text (or more if necessary) about each scanned page so I can search that. Something I do in a brain-dead moment every month or two. It can be interesting to look back through the notes and see if I've forgotten about anything interesting.
Often I'll write out the math for something multiple times before I really understand it, and using a pen works much better for me. Only a small fraction of what I write out is worth TeXing up.
Re: Convert hand drawn equations to LaTeX
#33On a somewhat related note, does anyone have any particularly nice ways of writing math-related notes? Part of me wants to just hand-write them and then maybe scan them, but that's not searchable/indexable, and doesn't lend itself well to version control. Writing in TeX or LaTeX would make them searchable/indexable, but this seems a little heavyweight for just notes (like answers to exercises). I don't use TeX/LaTeX…
Here's a video [1] by a math grad student showing how he uses a Surface Pro with OneNote for his math note taking, annotating papers, and stuff like that.
It can search in handwritten notes, and can convert them to text (including converting handwritten math).
I don't do enough math writing or note taking to justify the cost of a Surface Pro, so don't personally know if it really works as well as it appears to in the video.
Re: Convert hand drawn equations to LaTeX
#34I am building an Android (best with stylus) hand writing app...
Drawings can be viewed / shared via web and are updated real-time (online whiteboard)
some samples:
http://write-live.com/d/dba21681-8d3f-4fbe-8b4b-e5c1983df934
http://docs.write-live.com/WriteliveServer/webview.html?d=2b...
Re: Convert hand drawn equations to LaTeX
#35On a somewhat related note, does anyone have any particularly nice ways of writing math-related notes? Part of me wants to just hand-write them and then maybe scan them, but that's not searchable/indexable, and doesn't lend itself well to version control. Writing in TeX or LaTeX would make them searchable/indexable, but this seems a little heavyweight for just notes (like answers to exercises). I don't use TeX/LaTeX…
I'm developing Writelive
(sample)
http://write-live.com/d/2aa4a21f-7bb0-4e02-929f-484dc8b7af10
(also check my other comment)
Re: Convert hand drawn equations to LaTeX
#36Nice! I can't wait to try it on my touch screen PC.
Tried it -- it doesn't work on my Linux laptop touch-screen, because hand gestures count only as mouse moves, not drags. Windows might differ. Update -- it does work on an Android tablet, where hand gestures do count as drags. Very nice -- if only my tablet were twice as big so my fingers wouldn't get in each others' way. Pretty slick. Now to get it as an open-source app.
They also have a native Android app:
https://play.google.com/store/apps/details?id=com.visionobje...
Re: Convert hand drawn equations to LaTeX
#37On a somewhat related note, does anyone have any particularly nice ways of writing math-related notes? Part of me wants to just hand-write them and then maybe scan them, but that's not searchable/indexable, and doesn't lend itself well to version control. Writing in TeX or LaTeX would make them searchable/indexable, but this seems a little heavyweight for just notes (like answers to exercises). I don't use TeX/LaTeX…
When I was an undergrad, I would take hand written notes in class, which helped the material sink in better I think. Then I would go home and write the notes up neatly using LyX. This re-enforced the material and let me worry about presentation in the second stage, so I could just worry about getting it on paper in the first stage. It also made me very fluid at writing mathematics in LyX, which has a strong advantage over latex in my opinion in that you can actually see what you are writing out.
Re: Convert hand drawn equations to LaTeX
#38From what I can tell, it had a hard time distinguishing matrices from vectors. What I wanted was: [ 1 1 ] [ 0 1 ] What I got was [ 11 ] [ 01 ]
To be fair, most humans would probably have difficulty interpreting that. The problem with a lot of these tools is that they have no idea of context. A human reading your matrix will know why you are writing it out, and probably how it is expected to fit into the larger text, and therefore has a lot of contextual information prompting them towards interpreting your chicken scratch as a matrix, not a vector.
I tried to write the equivalent of \widetilde{u} which it interpreted as u^n. On reflection, what I wrote did look like an n above the u. But if you work in the same field as me, you would immediately assume it was a widetilde.
Re: Convert hand drawn equations to LaTeX
#39Very neat. One problem is immediate: when I handwrite an "x" for maths, it is as two 'c's touching back-to-back, so as not to confuse with some multiplication/cross-product symbol; such input proves very confusing to this code.
> so as not to confuse with some multiplication/cross-product symbol
There really isn't much need for the multiplication symbol when we have side-by-side multiplication notation, and if x is a vector then you can underline it to distinguish it from the cross product (or just not name your vectors x). The "two c's" x has always looked bad to me and ends up getting confused with α and other things.
Re: Convert hand drawn equations to LaTeX
#40On a somewhat related note, does anyone have any particularly nice ways of writing math-related notes? Part of me wants to just hand-write them and then maybe scan them, but that's not searchable/indexable, and doesn't lend itself well to version control. Writing in TeX or LaTeX would make them searchable/indexable, but this seems a little heavyweight for just notes (like answers to exercises). I don't use TeX/LaTeX…
Libreoffice formula format is simple