LaTeX Why is Latex acting strange on Physics Forums?

  • Thread starter Thread starter bapowell
  • Start date Start date
  • Tags Tags
    Latex
AI Thread Summary
Users are experiencing issues with LaTeX rendering in posts on the Physics Forums, where instead of displaying new equations, the system shows previously entered LaTeX entries. This problem appears to be related to caching and affects all users, regardless of their browser or operating system. While refreshing the page can sometimes resolve the issue, it may require multiple attempts after editing or previewing posts. Clearing the browser cache has not proven effective. A potential solution is on the horizon, as the site plans to switch to MathJax, which is expected to eliminate these rendering quirks. Users are advised to continue posting, as the final output typically displays correctly despite the preview issues.
bapowell
Science Advisor
Insights Author
Messages
2,243
Reaction score
261
Starting yesterday, when I attempt to include latex in my PF posts, instead of rendering what's between the latex tags, it prints out latex entries from my previous posts! For example, if I were to enter 15 separate latex equations, instead of printing these, it would render my last 15 (those prior to yesterday) latex equations in their place.

Does anyone have any idea what's going on here??
 
Physics news on Phys.org
Hmm, I'm not seeing LaTeX in this post...

e^{\pi i}+1=0, \rm \LaTeX test
 
Last edited:
This is a test:

e^{\pi i} + 1 = 0
 
Apparently the tex tags are case sensitive; I'm posting mobile so the stupid autocorrect messed the tag up and I didn't notice.

Is it just the incorrect previewing issue, or is it with normal posts? Does refreshing load the proper TeX?
 
It only appears to be a problem with the preview. Refreshing doesn't appear to help.
 
bapowell, this also happens to me. I tend to ignore it because I know it'll show the correct LaTeX when the post is made. I haven't tried this myself, but have you tried clearing the cache?
 
This is a known problem with LaTeX on the site, and has to do with the way the TeX images are cached.

I believe Greg is planning to switch the site over to MathJax, which should remove this issue.
 
Metaleer said:
bapowell, this also happens to me. I tend to ignore it because I know it'll show the correct LaTeX when the post is made. I haven't tried this myself, but have you tried clearing the cache?
I've not. I don't know how to do this. I tried clearing my browser cache to no avail. Thanks for all the responses. I suppose this is not that big a deal as long as the latex prints properly in the final message.
 
  • #10
bapowell said:
Starting yesterday, when I attempt to include latex in my PF posts, instead of rendering what's between the latex tags, it prints out latex entries from my previous posts! For example, if I were to enter 15 separate latex equations, instead of printing these, it would render my last 15 (those prior to yesterday) latex equations in their place.

Does anyone have any idea what's going on here??
This is not a "real" problem - it's a caching quirk. Simply reload/refresh page to display correct equations.
 
  • #11
Bapowell, what you're describing sounds exactly like the problem that we've all had since April 13, 2010. It affects everyone, regardless of what browser and operating system they're using. The workaround is to refresh and resend after each preview, and you sometimes have to do it one more time after saving an edit. Clearing the browser cache doesn't help.
 

Similar threads

Replies
4
Views
2K
Replies
9
Views
2K
Replies
16
Views
3K
Replies
8
Views
3K
Replies
3
Views
4K
Replies
3
Views
2K
Replies
2
Views
3K
Replies
4
Views
4K
Back
Top