Hi Mark, In the customresponse section, the array created matches the size of the submission. It's the Perl script I was wondering about. The number of variables defined in the Perl script to capture the submission will ultimately be 76, but the actual number of submission elements will vary from 20 to 76, depending on the randomization. The predefined variables to capture the submission elements will usually "outnumber" the actual submission elements.
In my experience so far, those extra variables do not get used/initialized. When I try to display them in the problem statement (for debugging purposes) they do not have values, just show up as literals, e.g., "$A2plus_tailx" instead of some numeric value. Does that make sense? BR, Gene L. Harding, PE Associate Professor of ECET Purdue University 574-520-4190 https://polytechnic.purdue.edu/south-bend/ -----Original Message----- From: LON-CAPA-users <lon-capa-users-boun...@mail.lon-capa.org> On Behalf Of Lucas, Mark Sent: Wednesday, March 4, 2020 8:57 AM To: Discussion list for LON-CAPA users <lon-capa-users@mail.lon-capa.org> Subject: Re: [LON-CAPA-users] Quick Question My gut says that is not a problem. Since you are grading it in the customresponse, you just ignore those parts of the array if they do contain useful information. They will be saved as part of the “submission” record for the student, but that shouldn’t be a problem. Mark > On Mar 4, 2020, at 8:44 AM, Harding, Gene L <glhar...@purdue.edu> wrote: > > Hi, > > I have a question about accessing submissions using the &submission() > function. > > I am working on a problem interfacing with Geogebra that will have a variable > number of submission inputs, depending on the randomization of the problem. > The code in the customresponse section is relatively short and > straightforward, so I just used an array to load the values. Someone at last > year’s conference suggested this approach, and it works well, creating an > array of the appropriate size for the submission: > <image002.jpg> > > The code in the primary block of Perl script, however, is more complicated, > so I have been using discrete variables with names that make it easier to > read, follow, and troubleshoot the code: > <image006.jpg> > I have found that I can include the unused variables, which in the above case > are all of the variables beginning with $A2, and LON-CAPA just ignores those > variables with no apparent ill effects. Is that a reasonable and “safe” way > to write the code, or I am asking for trouble using this approach? > > Best regards, > > Gene L. Harding, PE > Associate Professor of ECET > Purdue University > 574-520-4190 > https://polytechnic.purdue.edu/south-bend/ > > _______________________________________________ > LON-CAPA-users mailing list > LON-CAPA-users@mail.lon-capa.org > https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmail. > lon-capa.org%2Fmailman%2Flistinfo%2Flon-capa-users&data=02%7C01%7C > lucasm%40ohio.edu%7C269ca88417f8491a9cf108d7c042612a%7Cf3308007477c4a7 > 0888934611817c55a%7C0%7C0%7C637189263646163217&sdata=FbYNztkeBq0Q0 > Cfz%2BU4pX7xL74HzWKpwcuuLKuQO4jg%3D&reserved=0 -- Mark Lucas email: luc...@ohio.edu 252D Clippinger Lab phone: (740)597-2984 Department of Physics and Astronomy fax: (740)593-0433 Ohio University Athens, OH 45701 _______________________________________________ LON-CAPA-users mailing list LON-CAPA-users@mail.lon-capa.org http://mail.lon-capa.org/mailman/listinfo/lon-capa-users _______________________________________________ LON-CAPA-users mailing list LON-CAPA-users@mail.lon-capa.org http://mail.lon-capa.org/mailman/listinfo/lon-capa-users
