From nmoore at winona.edu  Wed Sep 28 16:07:37 2022
From: nmoore at winona.edu (Moore, Nathan T)
Date: Wed, 28 Sep 2022 20:07:37 +0000
Subject: [LON-CAPA-users] display number with "E" scientific notation
Message-ID: <DM6PR10MB2858AA14743B2810AD64A549A4549@DM6PR10MB2858.namprd10.prod.outlook.com>

Imagine I have a variable that's random

$length=&random(150,250,1);

Specific case, $length = 157;

I want this value to be printed for users with the "E" power of 10 notation, eg I want the user to see

1.57E2

The following code displays almost what I want, 1.57x10^2, but what I really want is 1.57E2 <num  format="%.02E">$length</num>

Thoughts on a workaround?

-----------------------------------------------------------------
Nathan Moore, PhD (he/him)

Professor, Physics and General Engineering Programs
Winona State University

Come study on Minnesota's Southeast Coast

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From lucasm at ohio.edu  Wed Sep 28 16:39:35 2022
From: lucasm at ohio.edu (Lucas, Mark)
Date: Wed, 28 Sep 2022 20:39:35 +0000
Subject: [LON-CAPA-users] [External] display number with "E" scientific
 notation
In-Reply-To: <DM6PR10MB2858AA14743B2810AD64A549A4549@DM6PR10MB2858.namprd10.prod.outlook.com>
References: <DM6PR10MB2858AA14743B2810AD64A549A4549@DM6PR10MB2858.namprd10.prod.outlook.com>
Message-ID: <6CA270DB-CDA0-4A7F-B781-CA71F6F9EB99@ohio.edu>

Nathan,

A workaround would be to do a sprintf in the script and then use the string in the text of the problem.

<script type=?loncapa/perl?>
$length = 157;
$result = sprintf("%.02E", $length);
</script>
<startouttext/> The length is $result meters.<endouttext/>

It?s a bit cumbersome, but it looks like it works.

Mark
> On Sep 28, 2022, at 4:07 PM, Moore, Nathan T via LON-CAPA-users <lon-capa-users at mail.lon-capa.org> wrote:
> 
> Use caution with links and attachments.
> Imagine I have a variable that?s random
>  
> $length=&random(150,250,1);
>  
> Specific case, $length = 157;
>  
> I want this value to be printed for users with the ?E? power of 10 notation, eg I want the user to see
>  
> 1.57E2
>  
> The following code displays almost what I want, 1.57x10^2, but what I really want is 1.57E2 <num  format="%.02E">$length</num>
>  
> Thoughts on a workaround?  
>  
> -----------------------------------------------------------------
> Nathan Moore, PhD (he/him)
>  
> Professor, Physics and General Engineering Programs
> Winona State University
>  
> Come study on Minnesota?s Southeast Coast
>  
> _______________________________________________
> LON-CAPA-users mailing list
> LON-CAPA-users at mail.lon-capa.org
> http://mail.lon-capa.org/mailman/listinfo/lon-capa-users

-- 
Mark Lucas
Professor of Instruction
Department of Physics and Astronomy (College of Arts and Sciences)/Ohio Honors Program (Honors College)
252D Clippinger Lab, Ohio University, Athens, OH 45701
email: lucasm at ohio.edu
phone: (740)597-2984
Pronouns: He, Him, His