[LON-CAPA-users] Conditional Blocks

Harding, Gene L glhardin at purdue.edu
Tue Mar 17 10:39:59 EDT 2020

Thanks Doug! The syntax you sent, combined with code I wrote for a different problem, allowed me to get something workable, although I still have two issues to sort out:

1.       How do I get the score for a problem part? I assume it’s &stored_data(“partscore”,”partid”); where partscore is the name of a variable holding the score for partid, but I do not know the variable name.

2.       When I turn on lenient grading, it does not allow multiple attempts, even if tries < maxtries. Is that normal?

By the way, is there documentation somewhere with a list of parameters, like maxtries, and data variables, like tries? I think I could figure my way through this without bugging the listserv if I had such a document…

Best regards,

Gene L. Harding, PE
Associate Professor of ECET
Purdue University

From: LON-CAPA-users <lon-capa-users-bounces at mail.lon-capa.org> On Behalf Of Mills, Douglas G
Sent: Monday, March 16, 2020 11:39 PM
To: Discussion list for LON-CAPA users <lon-capa-users at mail.lon-capa.org>
Subject: Re: [LON-CAPA-users] Conditional Blocks

Hi Gene,

The code I pulled from a quiz I coded and may perhaps give you the right idea:

<block condition="($current==2) || ($answer_available)">

In your case you will probably want to make the condition either than question 1 has been answered correctly or that all the tried have been used.   I can track specifics down for that if needed but perhaps the example is enough to get you on the right track?


-sent from mobile-

On Mar 16, 2020, at 6:28 PM, Harding, Gene L <glhardin at purdue.edu<mailto:glhardin at purdue.edu>> wrote:


I am working on a problem for an upcoming exam. In the past I have just done it via paper exam, which was fine until now. (I did plan to do it in LON-CAPA someday, but thanks to Corona, someday is now here.)

The problem starts with an optionresponse. After the student answers it, I want to show a radiobuttonresponse problem, then show a figure and a matrix equation containing 15 parts. In the past I have used the “display-one-part-at-a-time” feature, but the catch is that the matrix equation has 15 parts in it, and I need to show the figure and all 15 parts of the matrix equation at the same time, right after the radio button problem.

I suspect I can do it with a <block></block> tag, but am having trouble finding examples of conditional expressions and variables that I can use inside the <block> code. Does anyone know of a good resource for that info, or know the parameters and syntax I need to use? I have explored the authoring guide and LON-CAPA online help, done web searches, and looked through YouTube, all to no avail…

Best regards,

Gene L. Harding, PE
Associate Professor of ECET
Purdue University

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