Re: [Gretl-users] a rather naive question on time-consuming tasks ?

[...] The operation Artur mentions, namely assigning a scalar value to a single element of a matrix, is a special case of assignment to a sub-matrix, which has the general form: M[r1:r2,c1:c2] = <expression> where the r's and c's are expressions that evaluate to row and column indices. This demands a lot more parsing effort than assigning a scalar value to a place in a series (where the only valid specifier on the left is a single observation number). We could maybe write a dedicated, faster function for the special case, but even then we first have to figure out that we're actually in that special case.