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02-26-2019
10:10 AM

4 Replies

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03-05-2019
01:22 AM

@9927744 ,

If I am understanding correctly, this has little to do with mathematics and more to do with HTML editing. I'm not completely sure because I'm unfamiliar with the term "lightbox." I think you are talking about the tooltip that pops up when people hover over the equation as shown in this figure.

It is controlled by the contents of the *title* attribute of the *img* element. Here's what the equation above looks like when you edit it. Canvas has inserted the MathML code and some other things. (I also removed the hostname from the *src* attribute and manually broke the lines for spacing purposes).

`<p>`

<img

class="equation_image"

title="x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}"

src="/equation_images/x%253D%255Cdfrac%257B-b%255Cpm%255Csqrt%257Bb%255E2-4ac%257D%257D%257B2a%257D"

alt="LaTeX: x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}"

data-equation-content="x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}"

data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML">

<mi>x</mi>

<mo>=</mo>

<mstyle displaystyle="true" scriptlevel="0">

<mfrac>

<mrow>

<mo>&#x2212;<!-- − --></mo>

<mi>b</mi>

<mo>&#x00B1;<!-- ± --></mo>

<msqrt>

<msup>

<mi>b</mi>

<mn>2</mn>

</msup>

<mo>&#x2212;<!-- − --></mo>

<mn>4</mn>

<mi>a</mi>

<mi>c</mi>

</msqrt>

</mrow>

<mrow>

<mn>2</mn>

<mi>a</mi>

</mrow>

</mfrac>

</mstyle>

</math>" />

</p>

You will need to edit every place that the equations occur by going into the HTML and modifying it directly. You can edit all of the *title* attributes on that page at one time, though.

I'm not sure why you need to do this. Perhaps to improve the tip to say "Quadratic Formula" instead of providing the formula? But there isn't going to be any easy way to automate that. Perhaps if you had some other data source set up with names somewhere else you could write a computer program that would download a page, edit it, and write it back (I've done this using the Canvas API), but in most cases, I wouldn't have a clue what the title should be without looking at the equation.

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03-06-2019
09:29 AM

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03-06-2019
11:47 AM

One benefit of letting people see the LaTeX is that then they get to use it when they turn in stuff. I had my college algebra class turn in their homework using essay questions and the equation editor last summer. I don't have evidence one way or the other, but I hope that them mousing over what I typed allowed them to see how it was done.

If you are trying to remove all of the titles completely and you have a text editor that supports regular expressions, you could do a search/replace for a title=".*?" and replace it with nothing. I've done that by copying the HTML from Canvas into an editor, cleaning it up, then copying it back. I'm not sure if it still does or not, but at one time Dreamweaver had the ability to search and replace for attributes within certain elements.

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09-19-2019
07:03 PM

Hello @9927744 ...

I am reviewing older questions here in the Canvas Community, and I stumbled upon your question. I wanted to check in with you because I noticed that there hasn't been any new activity in this topic since @James ' reply on March 6, 2019. Do you feel that your question has been answered? If so, please feel free to mark one of James' responses using the "Mark Correct" button. However, if you still have questions about this topic, please let Community members know by posting a comment below. For the time being, I am going to mark your question as "Assumed Answered" mainly because there hasn't been any new activity in this topic for over six months. However, that won't prevent you or others from posting additional questions and/or comments below that are related to this topic. I hope that's alright with you, Jennifer. Looking forward to hearing back from you soon.

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