STACK: Grading a single checkbox item

Re: STACK: Grading a single checkbox item

by Teemu Kokkonen -
Number of replies: 0
Hi,

I get back to this as I just realized that I still have (hopefully a minor..) issue with using the Matrix input type for this purpose. As I explain above I would need to prefill the matrix as the students only need to fill in a handful of non-zero values (sparse matrix). I thought I had found a solution as I succesfully applied the Syntax hint for this purpose, but I only tested it with a small 3 x 3 matrix. I inserted matrix ([0,0,0],[0,0,0],[0,0,0]) in the Syntax hint field, which - just as desired - prefilled the input matrix with zeros. This, however, seems to work only for matrix sizes up to 10 x 10 cells. For larger matrices I get an "Error writing to database" error.

Any idea is there a way around this?

Thanks!

Teemu