ggiraph | make 'ggplot' graphics interactive | Data Visualization library

ggiraph package is suitable for generating interactive graphics.

I was trying to execute some examples found online concerning package ggiraph and I was not able to find anywhere how to export the interactive graph generated, maybe in format svg (or other).

Below the code:

What: Dynamically set the contents of ggiraph tooltips in rmarkdown knitted to html on page load.

Why: Using embedded png's tooltips can be made to be graphics which is valuable for certain biological structures where text is insufficient. Here is a minimal example of what I'm currently doing:

When I used guides() specifications to customise legend appearance, I found that the interactive nature of the legend in the plot is lost.

The following code modified from the example in the ggiraph documentation.

I'm trying to create an app that allows 1) a user to hover over scatter plot points, which displays a label associated with the point, and 2) search for a specific point by label.

Currently, to highlight a point, I re-plot the graph each time the user submits a search term, adding that single point on top of rest of the points that have been plotted.

In order to avoid the server re-plotting before the user finishes typing the label, I require that the "search" button be pressed. However, I'm struggling to get the plot to display BEFORE the user has searched for any labels.

Here's what I have so far:

Trying to have a pie (or preferably, donut) chart that displays totals per category and that allows a drilldown to display specifics per category when clicked. Make sense?

I think I might not have every system setting correct, since also copy/paste standard examples render an empty page. Unless that's somehow outdated or something. My system: Ubuntu 20.04, R 4.0.5, packageVersion("shiny") 1.6.0, shiny-server --version 1.5.16.958 Blank examples: https://plotly-r.com/linking-views-with-shiny.html#drill-down and Creating drill down report in R Shiny (amongst others)

My current attempt (not reactive yet because I can't for the life of me figure it out):

Using ggiraph, I'd like to set css properties differently for each ggplot geom_ or layer using hover. In the example below, how might I set the stroke for the second geom_rect_interactive to blue on hover but keep the first layer stroke red on hover (keeping the data_id the same so both respond to hovering over either layer)?

I created the following Rmarkdown file to make a selection based on clicking an interactive ggplot.

In the javascript chunk I would like to use instead of "A" the letter (A or B) obtained from
the onclick event in the interactive ggplot. If the user clicks on polygon B then the "A" should become a "B".

This may well be a CSS query rather than a {ggiraph} question, or may be to do with my R or Cairo installation, but here goes:

I'm building a ggiraph interactive plot, but the settings that I apply for tooltip options aren't applied to the printed plot.

This is a reprex:

I am creating an RShiny app that centres around a network drawn in ggiraph. The network is very large and detailed so ideally I'd like it to fill as much of the page as possible.

I've had a lot of problems getting ggiraph to scale properly, and also with margins/padding in RShiny. I've gotten this far with the code but it's still leaving huge amounts of whitespace