[Gretl-devel] Re: Matrix Row-/ column names after selifc()/r()

Am 08.09.19 um 17:00 schrieb Allin Cottrell: > On Sun, 8 Sep 2019, Artur Tarassow wrote: > >> Am 08.09.19 um 00:41 schrieb Allin Cottrell: >>> On Sat, 7 Sep 2019, Artur Tarassow wrote: >>> >>>> it's cool that row or column names of matrices remain intact when >>>> applying >>>> the msortby() function. >>>> >>>> However, when applying row or column selection by means of selifr() or >>>> selifc() destroys the attached labels of the respective dimension. See >>>> below for examples. >>>> >>>> This is a bit annoying for practical work. Would it be possible to make >>>> sure that the labeling remains intact? >>> Shouldn't be too difficult; I'll take a look. >> Thank you, Allin! > That's now done in git. For selifc and selifr, if the input matrix has > names in the dimension subject to selection we copy across the > appropriate subset. And if it has names in the other dimension we copy > them all across to the result. > > While I was at it I revised the name-handling behaviour of column and > row concatenation. In the case of C = A ~ B, if A has rownames we copy > them to C, and if both A and B have column names we use them to name > the columns of C. And similarly, mutatis mutandis, for C = A | B. Thank you, Allin. This works fine! However, I just found that the following won't work -- is this intended? <hansl> matrix A = mnormal(3,2) strings cname = defarray("A", "B") strings rname = defarray("R1", "R2", "R3") cnameset(A, cname) rnameset(A, rname) eval A[-1,] eval A[,-2] </hansl>