How can I make the numbering fit the size of the diagram in Fletcher?

Questions
,
1

Hi,

$ "before"
  #diagram(
   spacing:(3em,2em),
   let (FXFY_FZ, FX_FYFZ, FXYFZ, FXY_Z, FXFYZ,FX_YZ) = (( 0, 0), ( 1,0), (0,1), (0,2),(1,1),(1,2)),
  node(FXFY_FZ,$(F X times.circle F Y)  times.circle F Z$ ),
  node(FX_FYFZ, $F X times.circle ( F Y  times.circle F Z)$),
  node(FXYFZ, $F (X times.circle Y)  times.circle F Z$),
  node(FXY_Z, $F ((X times.circle  Y)  times.circle  Z)$),
  node(FXFYZ, $F X times.circle  F (Y  times.circle  Z)$),
  node(FX_YZ, $F (X times.circle (  Y  times.circle  Z))$),
  edge(FXFY_FZ,FX_FYFZ,"->",$alpha$),
  edge(FXFY_FZ,FXYFZ,"->",$phi times.circle id$),
  edge(FXYFZ,FXY_Z,"->",$phi$),
  edge(FXY_Z,FX_YZ,"->",$F alpha$),
  edge(FX_FYFZ,FXFYZ,"->",$id times.circle phi$,label-side: left),
  edge(FXFYZ,FX_YZ,"->",$phi$,label-side: left),
) "after"
$

I would like to have ‘before’ and ‘after’ centered, as well as the numbering in the middle of my diagram.

2

Using block() almost works, but it still seemed necessary to manually shift the diagram a bit with move().

#import "@local/fletcher:0.5.7": diagram, node, edge
#set math.equation(numbering: "(1)")

#let fig = diagram(
	spacing:(3em,2em),
	let (FXFY_FZ, FX_FYFZ, FXYFZ, FXY_Z, FXFYZ, FX_YZ) = ((0,0), ( 1,0), (0,1), (0,2), (1,1), (1,2)),
	node(FXFY_FZ, $(F X times.circle F Y) times.circle F Z$),
	node(FX_FYFZ, $F X times.circle (F Y times.circle F Z)$),
	node(FXYFZ, $F(X times.circle Y) times.circle F Z$),
	node(FXY_Z, $F((X times.circle Y) times.circle Z)$),
	node(FXFYZ, $F X times.circle F(Y times.circle Z)$),
	node(FX_YZ, $F(X times.circle (Y times.circle Z))$),
	edge(FXFY_FZ, FX_FYFZ, "->", $alpha$),
	edge(FXFY_FZ, FXYFZ, "->", $phi times.circle id$),
	edge(FXYFZ, FXY_Z, "->", $phi$),
	edge(FXY_Z, FX_YZ, "->", $F alpha$),
	edge(FX_FYFZ, FXFYZ, "->", $id times.circle phi$, left),
	edge(FXFYZ, FX_YZ, "->", $phi$, left),
)

$ "before" #block(move(dy: -0.66em, pad(x: 1em, fig))) "after" $

Screenshot 2025-03-26 at 15.37.44
Screenshot 2025-03-26 at 15.37.442034×564 54.4 KB

2 Likes
3

I remembered that there is a baseline field for box, which does work and might be good enough (as it’s a slightly simpler solution):

$ "before" #box(baseline: 3.8em, fig) "after" $

But it does mean that you have to level it manually, so it can be imprecise. Although dy: -0.66em also feels random, and I would think that -0.65em is the correct value since this is the default leading. But both are within 1 pixel of perfection, so it doesn’t really matter.

P.S. @Jollywatt, you are using the local package.

1 Like
4

Thank you very much, @Jollywatt and @Andrew, for your answers. As I see, I have to do it manually, but is there a way to get the dimensions of the diagram and then create a function to do it automatically?

5

The block+move doesn’t do manual stuff, it’s just a correction. I think it would work for everything.

#let mcenter(body) = block(move(dy: -0.66em, body))
$ "this" mcenter(fig) "that" $
2 Likes
6

As I see, I have to do it manually.

Like Andrew pointed out, you shouldn’t need to adjust dy even when the diagram changes size :+1:

1 Like