On 1/15/21 1:21 PM, Joe Babb wrote:
I am trying to use Lyx to document some math and electronics and I need to place a block diagram into my document.  I can draw the diagram in a separate program and insert the jpg into Lyx, but what I'd rather do is draw it directly in Lyx and be able to place Greek characters in each box. I used to use Latex years ago and have the fourth edition of Guide to Latex which talks about the picture environment. But I find no picture environment in Lyx.  I read on the Internet about typing an M-x somewhere to get to insert commands directly but can't get that to work.  I keep wanting to work in the code preview pane to insert Latex code directly but can't.  Is it possible at all in Lyx to to a block diagram?
thanks,
Joe

First, to insert "raw" LaTeX into a LyX document, use Insert > TeX Code, the default shortcut for which is Ctrl+L.

As for drawing diagrams, if you want to use Xy-Pic, there is a manual on how to do that in LyX (Help > Specific Manuals > XY-Pic. Other possibilities (doubtless among many) are to use the pstricks or tikz LaTeX packages. Each comes with its own learning curve. I have directly embedded tikz commands in LyX documents to produce diagrams, including flowcharts.

Paul


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