sankey | Sankey Diagrams - | Data Visualization library

I have something like this:

I've build a Sankey diagram using plotly. I want to name the columns giving each one a column title, like the text in red below:

How can I write these column titles?

After making my Sankey Diagram work I wanted to change some stuff in the JSON input file, I added two more values to have them displayed when I over a nodes but I run into an issue which leads me here. So, After adding these two values my diagram simply won't work again, first with the two values added it's output the same error in the title here's the code for both

I'm trying to plot patient flows between 3 clusters in a Sankey diagram. I have a pd.DataFrame counts with from-to values, see below. To reproduce this DF, here is the counts dict that should be loaded into a pd.DataFrame (which is the input for the visualize_cluster_flow_counts function).

After making a graph in parallel coordinates, I'm starting now a graph in Sankey Diagram type. So I Looked at this code : https://www.d3-graph-gallery.com/graph/sankey_basic.html and litteraly yanked it to try to understand how it's made to add later some interactions, but in first time I want to use my own data (https://raw.githubusercontent.com/augustin-laurent/Visualization_Tool/master/data.json).

But after changing the input file, I got an error that says the height of the nodes is a negative value :

I am trying to add custom data to my links and nodes on Sankey Chart. I am referring to plotly's official website .

Using the code available on their website:

It's my first time creating a dashboard and I'm running into a problem I can't seem to solve. I have created a sankey diagram and I want to be able to interactively change its contents through different dataframes (in this example: level_1, level_2, level_3). I've only ever practiced this with a regular plot, where the input would come from a variable within one dataframe which is my starting point in this piece of code (e.g. I have a df$country, so I use input$country in my plot --> Then I could choose from different countries in the dashboard sidebar, in order to change the contents of the plot). I have no idea how to do this when the input has to come from seperate dataframes.

My code: (in app.R)

I'm working on an R markdown document but am stuck with a "sankey chart" element. The Sankey element works fine in its code, but when I knit markdown the element doesn't show up in the markdown (or is just blank[?]).

I would very much like to make an illustration like the one in the link:

How to add a label to each stratum to display additional information in a rank-change chart using alluvial in R?

I have trouble doing it in Python as it creates multiple linked figures which I do not want. My script is:

import plotly.graph_objects as go