Re: SetOptions does not work with Grid

*To*: mathgroup at smc.vnet.net*Subject*: [mg115779] Re: SetOptions does not work with Grid*From*: István Zachar <zac at freemail.hu>*Date*: Thu, 20 Jan 2011 06:32:11 -0500 (EST)*References*: <igmcri$5e$1@smc.vnet.net> <ih3rdm$bgu$1@smc.vnet.net> <ih6eb4$3dl$1@smc.vnet.net>

On Jan 19, 11:27 am, Armand Tamzarian <mike.honeychu... at gmail.com> wrote: > On Jan 18, 9:52 pm, Istv=E1n Zachar <z... at freemail.hu> wrote: > > > > > Can anyone at least confirm this behaviour? > > Istvan > > > On Jan 13, 9:24 am, Istv=E1n Zachar <z... at freemail.hu> wrote: > > > > Dear Group > > > > SetOptions is notoriously ignorant in case of some functions, like > > > Grid, see code below. First grid appears without a a frame, though it > > > should have one. Is it a bug? Is there a workaround other than > > > Untprotecting Grid and use Options[Grid] = {new options..}? > > > > SetOptions[Grid, Frame -> All]; > > > Grid[{{1, 1}, {2, 2}}] > > > Grid[{{1, 1}, {2, 2}}, Frame -> All] > > > > Istv=E1n > > As it happens I just asked tech support today why SetOptions doesn't > work with Grid (or Column) but does work with Row. The answer was that > Row is a RowBox and Grid and Column are GridBoxes. "GridBox does not > support SetOptions" > > In other words it doesn't work because SetOptions isn't supported but > no explanation of why SetOptions isn't, or can't be, supported. > > Interestingly to demonstrate this behaviour of GridBox the response > was first to Options[GridBox], to show the options, then > SetOptions[GridBox] to get the message. Then do the same for RowBox. > > When you do that you see that the system tells you GridBox has options > but you cant SetOptions (you get a message), whereas RowBox doesn't > have options (empty list) but you can SetOptions! > > I've found a few other cases of SetOptions not working. I'll gather > them and post them to the group. > > Mike Thanks for the information Mike, this makes the situation clear to me. Long since I have the feeling that in some cases SetOptions does nothing at all, but could not narrow down this hunch to GridBox objects. There are/were some cases, I recall, when certain plots failed to accept option changes, but that was caused by bad programming inside these functions, and not something that is a well defined and (I think) intended behaviour, like the 'impairedness' of GridBox. I can only hope that this will be improved in future releases. As a matter of fact, I use Mathematica 8.0.0.0 under Win7 (64-bit). Istvan