Re: Input cells destroy Grids?

*To*: mathgroup at smc.vnet.net*Subject*: [mg124795] Re: Input cells destroy Grids?*From*: Mark Green <p0073857 at brookes.ac.uk>*Date*: Tue, 7 Feb 2012 04:03:06 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*References*: <jgaufa$esh$1@smc.vnet.net> <jgdn3d$qpg$1@smc.vnet.net>

That's perfect, exactly what I wanted - thanks very much! I would like to know if there's any reason why the Grid was ignored, though - is it a Mathematica bug or am I combining things incorrectly? On Feb 2, 10:04 am, A Retey <a... at gmx-topmail.de> wrote: > Am 01.02.2012 09:51, schrieb Mark Green: > > > I'm trying to make a slide which will allow students to insert arbitrary numbers into a matrix multiplication, and have gotten this: > > > incel = {1, 2, 3, 4}; > > matrix = {{1, 0, 0, 0}, {0, 1, 0, 0}, {0, 0, 1, 0}, {0, 0, 0, 1}}; > > Style[Grid[{{MatrixForm[incel, TableDirections -> Row], > > ""}, {InputField[MatrixForm[matrix]], MatrixForm[incel.matrix]}}], > > FontSize -> 40] > > > It looks fine if I remove the InputField call, but with it in there, the input field takes up the entire width of the notebook, ignoring the fact there's supposed to be a grid cell to the right of it. Also, I have a feeling this won't work in FreeCDF because the input is of a matrix, not a number. > > > Is there a better way of doing this that inputs only numbers and that fits in a grid? > > I think this is doing what you want: > > matrix = {{1, 0, 0, 0}, {0, 1, 0, 0}, {0, 0, 1, 0}, {0, 0, 0, 1}}; > > MatrixForm[ > Table[With[{i = i, j = j}, > InputField[Dynamic[matrix[[i, j]]], Number, ImageSize -> 50]], {i, > 4}, {j, 4}]] > > If you want, you can use Appearance -> None for the InputFields which > makes the result look like what you had. On the other hand I think that > it usually is best to avoid overdressed user interface but instead stick > with conventions for guis so everyone will understand at first glance > how they work... > > hth, > > albert