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Problem with LaTeX in some posts

  1. richg74
    Member

    I'm having a puzzling problem including a LaTeX equation in a post. I have it in a sample post (HTML below), and it works fine. I cut and paste the '$latex ... $' portion into another, longer draft, and I get "Formula does not parse". If I then cut and paste it from the second post (where it didn't work) back into the first (where it did), it works again.

    Here's the complete first post:
    <br /> Here is some text stuff:<br /> $latex s = \sqrt{ \frac{\sum_{i=1}^n (x_i - \bar{x})^2}{n-1} } $<br /> Some more stuff<br /> $latex s = \sqrt{ \frac{\sum_{i=1}^n (x_i - \bar{x})^2}{n-1} } $<br />

    Does anyone have any suggestions about what might cause this?

    The blog I need help with is richg74.wordpress.com.

  2. rchsbowman
    Member

    This isn't gonna help. I copied and pasted your code in a new post. It worked perfectly. I opened an older post of mine with LaTeX codes and pasted your code, and it worked perfectly. There is nothing wrong with the code... I'm sure you already knew that. I did change the \frac to \dfrac and I liked the larger fraction better.
    I wished when I used LaTex, it didn't look so out of place with the rest of my posts.

    Regards,

  3. raincoaster
    Member

    rich, we can't give you specific guidance without a link to your blog, starting with http.

  4. richg74
    Member

    Sorry, the posting form asked for the blog URL, and I supplied it. Didn't realize it wouldn't show up with the post. Anyway, here it is:

    http://richg74.wordpress.com/

  5. letsplaymath
    Member

    One thing I have noticed is that sometimes WordPress strips the slashes from LaTex markup. (At least, that's what happened to a draft I was working on today at http://letsplaymath.wordpress.com/) I think that whatever program they have watching out for javascript gets confused and interferes with the LaTex stuff.

    Once it was so bad that I had to go back through my archives and correct every post I'd ever used a fraction in. Frustrating! It hasn't happened for quite awhile, but it hit me today with some parentheses...Hmm, I wonder if I need to look through my back posts again...

  6. richg74
    Member

    Whatever the mechanism is that vets the content (perhaps the JavaScript check, as you said) seems to be pretty fragile. I tried taking a formula in a draft post that worked, and then edited it to put in a (deliberate) error. It failed to parse, no surprise there. But when I went back and removed the error (3 characters), it still didn't work.

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