[Blindmath] Format for matrices

Birkir R. Gunnarsson birkir.gunnarsson at gmail.com
Wed Nov 9 19:05:37 UTC 2011


While MathML is definitely the way to go .. because that's where we
need to get, I've seen the matrix rows separated by a vertical bar |
(although it should be noted in the text prior to the matrix that this
is the way it is displayed).
Just an idea.
Cheers
-B

On 11/9/11, Ken Perry <kperry at blinksoft.com> wrote:
>
> While I agree this is the correct way to display it if the person has a web
> browser that displays mathml it might be better to display it in a code
> block or a normal table until web browsers catch up with mathml.  I tried
> this block of code in IE 9 and it just gave a string of  numbers with Jaws
> 12 and while I would love it if all browsers supported this if you're trying
> to make something accessible for the time being for a student it might be
> better using something else.
>
> Just my opinion.
>
> Ken
>
> -----Original Message-----
> From: blindmath-bounces at nfbnet.org [mailto:blindmath-bounces at nfbnet.org] On
> Behalf Of Neil Soiffer
> Sent: Wednesday, November 09, 2011 1:39 PM
> To: Blind Math list for those interested in mathematics
> Subject: Re: [Blindmath] Format for matrices
>
> You can use MathML.  Here's a 4x4 identity matrix:
>
> <math display='block' xmlns='http://www.w3.org/1998/Math/MathML'>
>  <mrow>
>   <mrow><mo>(</mo>
>    <mrow>
>     <mtable>
>      <mtr>
>       <mtd>
>        <mn>1</mn>
>       </mtd>
>       <mtd>
>        <mn>0</mn>
>       </mtd>
>       <mtd>
>        <mn>0</mn>
>       </mtd>
>       <mtd>
>        <mn>0</mn>
>       </mtd>
>      </mtr>
>      <mtr>
>       <mtd>
>        <mn>0</mn>
>       </mtd>
>       <mtd>
>        <mn>1</mn>
>       </mtd>
>       <mtd>
>        <mn>0</mn>
>       </mtd>
>       <mtd>
>        <mn>0</mn>
>       </mtd>
>      </mtr>
>      <mtr>
>       <mtd>
>        <mn>0</mn>
>       </mtd>
>       <mtd>
>        <mn>0</mn>
>       </mtd>
>       <mtd>
>        <mn>1</mn>
>       </mtd>
>       <mtd>
>        <mn>0</mn>
>       </mtd>
>      </mtr>
>      <mtr>
>       <mtd>
>        <mn>0</mn>
>       </mtd>
>       <mtd>
>        <mn>0</mn>
>       </mtd>
>       <mtd>
>        <mn>0</mn>
>       </mtd>
>       <mtd>
>        <mn>1</mn>
>       </mtd>
>      </mtr>
>
>     </mtable>
>    </mrow>
>   <mo>)</mo></mrow>
>  </mrow>
> </math>
>
>
> On Wed, Nov 9, 2011 at 2:56 AM, Richard Baldwin
> <baldwin at dickbaldwin.com>wrote:
>
>> Is there an accepted accessible format for representing 4x4 matrices
>> in web pages?
>>
>> Thanks,
>> Dick Baldwin
>>
>> --
>> Richard G. Baldwin (Dick Baldwin)
>> Home of Baldwin's on-line Java Tutorials http://www.DickBaldwin.com
>>
>> Professor of Computer Information Technology Austin Community College
>> (512) 223-4758
>> mailto:Baldwin at DickBaldwin.com
>> http://www.austincc.edu/baldwin/
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