Here’s one of the graphs it offers - the sand lock tree. It is similar to the diagram in your link. However, it does not have couples combined in a single box. (Do you have an example of 2 people in one box in a pedigree-style diagram? That is not a layout I’ve seen anywhere. Although I have seen boxes for 2 people share a common edge.)
If you have not yet tried downloading add-ons, please start. Gramps is a fairly extensive basic starter kit … but the accessories are what makes it great. And they are still free. (So this ain’t an “up-sell”.)
yEd allows you to dynamically auto re-organize GEDCOM data into a variety of charts then tweak the chart with drag’n’drop.
No development for tools to interactively tweak diagrams within Gramps is on the Roadmap. (And I would argue that such a feature would be an inappropriate use of development time anyway.) The tools designed for tweaking charts took years of development and we do not have the years of development resources needed to even get within spitting distance.
So it is best to take advantage of another FOSS tool that does that piece of the puzzle.
Thanks! This is a great lead. So, basically, you use Gramps to store the data/metadata, and yEd for outputting for printing. I agree that these two general tasks are quite large and it so it makes sense for Gramps not waste time developing the graphical rendering features.
Regarding your previous comment, yeah I tried the Tree features, but got kind of stuck with MacTex… it wasn’t producing results intuitively/quickly enough for me … yEd seems like a better, more customizable route
You may want to look at the addon Graph View. While giving you the representation within Gramps, there is a print option that will output the current view to an SVG file.