On Fri, Jan 22, 2021 at 12:09 Paul A. Rubin <parubi...@gmail.com> wrote:
> On 1/22/21 1:06 PM, Neal Becker wrote: > > On Fri, Jan 22, 2021 at 11:26 AM Joel Kulesza <jkule...@gmail.com> > wrote: > >> On Fri, Jan 22, 2021 at 6:29 AM Neal Becker <ndbeck...@gmail.com> > wrote: > >>> I have an equation that has to be split (to fit into beamer > >>> presentation). It has large delimiters that span the lines. Does lyx > >>> have any facility to help with this? I did get a useable result, but > >>> only with a lot of ERT. Lyx seems not helpful here, is there any way > >>> other than ERT to get "\Biggl. ... \Biggr]"? Or "\right."? > >>> > >>> Here is what I wanted: > >>> > >>> \begin{multline*} > >>> > >>> \mathbf{X}_{N_{C}\times S\times > >>> > A}=\left[\left[\left[\sum_{n}m1_{p+cL_{c}+nS}m2_{p+cL_{c}+(n+\tau)S}^{*}\right.\right.\right.,\\ > >>> > >>> \Biggl.\Biggl.\Biggl.\tau\in[-A/2\dots A/2]\Biggr],p\in[0\dots > >>> S-1]\Biggr],c\in[0\dots N_{c}-1]\Biggr] > >>> > >>> \end{multline*} > >> > >> To accomplish this, I prefer to use the Insert Delimiters capability > (the subject of an adjacent thread). Using "none" will let you give the > appearance of matched delimiters that vertically scale to contain the > contents. The "Swap & Reverse" button is meant as a convenience to control > delimiter insertion in this manner. Finally, if you have lines that vary > in vertical extent, a vertical phantom (\vphantom) with the proper contents > will ensure consistent delimiter sizes. > >> > >> Hope this helps, > >> Joel > > Thanks for the reply. I can't see how to do this. Inserting > > Delimiters seems to insist on inserting a pair of delimiters - I don't > > see any way to just get \left[ for example. > I've attached three screenshots. The first (shot1.png) shows LyX open > with a new document, containing two copies of your example. The first > copy is pasted into an ERT box (so that I can see what you are shooting > for). The second has most of your example, but not the nested brackets, > typed into a multiline math environment. The first line of the multiline > formula is selected, so that I can put a left bracket in front of it. > > The second screenshot shows the delimiter insertion dialog. Note that I > unchecked the "keep matched" box below the left pane, then selected a > left bracket in the left pane and "(None)" in the right pane. > > The third screenshot shows the formula after I click "Insert" in the > delimiter dialog. There is a large left bracket at the start of the > first line and "phantom" bracked (dotted line) at the end of the first > line. To insert other brackets, do similar things, selecting the content > of the bracketed area and where appropriate selecting none on the left > and a closing bracket on the right. > Paul, Thanks for picking up the thread! If you provide the LyX file for shot3, I’ll demonstrate what I meant about vphantom. Thanks again, Joel
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