Hi Gerd, et al,
Sorry, but it is still not working. Now nothing is rendered at all, and I get
this error:
[cid:image001.png@01D26DBF.D0AE4A30]
This is the function definition:
$function = "$numer/$denom [pi +
\\sum_{n=1}^{\infty}($sum_numer/($sum_denom_n_coeff n -
$sum_denom_const))*sin($w nt)]";
This is the call from the xml to render it:
<center> <algebra>$function</algebra></center>
I think the <algebra> call is using Maxima, but I am so new to this that I am
not positive.
I noticed something interesting when I compared the int and sum functionality.
When I use “int” in the $function definition it needs no backslash at all, but
does render the integral sign and arguments. “sum” on the other hand does not
work either by itself, with one backslash, or with two backslashes. That makes
me wonder if “sum” is the wrong keyword in that context. I don’t know…
Gene L. Harding, PE
Associate Professor of ECET
574-520-4190
Purdue University-South Bend
-----Original Message-----
From: lon-capa-users-boun...@mail.lon-capa.org
[mailto:lon-capa-users-boun...@mail.lon-capa.org] On Behalf Of Gerd Kortemeyer
Sent: Friday, January 13, 2017 11:16 AM
To: Discussion list for LON-CAPA users <lon-capa-users@mail.lon-capa.org>
Subject: Re: [LON-CAPA-users] Algebra Expression Rendering in LON-CAPA
Hi,
Ah, okay, it’s inside Perl double quotes! Sorry, I did not catch that. In Perl,
“\” is the escape character, so you’ll need “\\” - an escaped backslash.
Apologies, I didn’t make the connection the first time around.
- Gerd.
> On Jan 13, 2017, at 11:05 AM, Harding, Gene L
> <glhar...@purdue.edu<mailto:glhar...@purdue.edu>> wrote:
>
> Hi,
>
> I think the formatting may be different inside a function assignment. This is
> what I get when I use the following syntax:
> $function = "$numer/$denom [pi +
> \sum_{n=1}^{\infty}($sum_numer/($sum_denom_n_coeff n -
> $sum_denom_const))*sin($w nt)]"; <image001.png> Did I mess up the syntax?
>
>
> Gene L. Harding, PE
> Associate Professor of ECET
> 574-520-4190
> Purdue University-South Bend
>
> -----Original Message-----
> From:
> lon-capa-users-boun...@mail.lon-capa.org<mailto:lon-capa-users-boun...@mail.lon-capa.org>
> [mailto:lon-capa-users-boun...@mail.lon-capa.org] On Behalf Of Gerd
> Kortemeyer
> Sent: Friday, January 13, 2017 10:39 AM
> To: Discussion list for LON-CAPA users
> <lon-capa-users@mail.lon-capa.org<mailto:lon-capa-users@mail.lon-capa.org>>
> Subject: Re: [LON-CAPA-users] Algebra Expression Rendering in LON-CAPA
>
> Hi,
>
> It’s \sum
>
> as in
>
> \sum_{n=1}^{\infty}
>
> - Gerd.
>
> > On Jan 13, 2017, at 10:29 AM, Harding, Gene L
> > <glhar...@purdue.edu<mailto:glhar...@purdue.edu>> wrote:
> >
> > Hi,
> >
> > I am having trouble rendering an algebraic expression with a summation sign
> > (capital Sigma). I want an expression that looks like this, using variables
> > for the numeric portions of the expression:
> > <image003.jpg>
> > I am able to render the integration sign using this code:
> > $function = "$numer/$denom [pi + int($sum_numer/($sum_denom_n_coeff
> > n
> > - $sum_denom_const),1,3)*sin($w nt)]"; …providing an expression that looks
> > like this:
> > <image004.png>
> >
> > But when I try to render the summation sign using this code:
> > $function = "$numer/$denom [pi + sum($sum_numer/($sum_denom_n_coeff
> > n
> > - $sum_denom_const),n,1,3)*sin($w nt)]"; …I get the following:
> > <image005.png>
> >
> > I have spent a couple of hours looking through the Maxima Manual and other
> > references, as well as some examples I have found online, but have not been
> > able to figure out the syntax for rendering the summation sign. Can anyone
> > offer advice on how to do this?
> >
> > Also, although not so important, if someone can tell me how to replace the
> > outer parentheses with square brackets, and/or how to display the numeric
> > part of the sine argument with commas (e.g., 90,000 vs 90000), I would
> > really appreciate it.
> >
> > Thanks,
> >
> > Gene L. Harding, PE
> > Associate Professor of ECET
> > 574-520-4190
> > Purdue University-South Bend
> >
> > _______________________________________________
> > LON-CAPA-users mailing list
> > LON-CAPA-users@mail.lon-capa.org<mailto:LON-CAPA-users@mail.lon-capa.org>
> > http://mail.lon-capa.org/mailman/listinfo/lon-capa-users
>
> --
> Gerd Kortemeyer, Ph.D.
> Associate Professor of Physics
> Director, LON-CAPA Project
> Michigan State University
> http://www.msu.edu/user/kortemey/
>
>
>
>
> _______________________________________________
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> LON-CAPA-users@mail.lon-capa.org<mailto:LON-CAPA-users@mail.lon-capa.org>
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> _______________________________________________
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--
Gerd Kortemeyer, Ph.D.
Associate Professor of Physics
Director, LON-CAPA Project
Michigan State University
http://www.msu.edu/user/kortemey/
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