ggalt | Extra Coordinate Systems , Geoms , Statistical | Data Visualization library

For the follow data df and plot, I hope to smooth the line, especially for the sharp corners parts marked by the blue rectangles in the figure below:

I have the below dataset;

I am attempting a dumbbell chart and so far have the following code;

I am working on a project in which I have to put labels on my chart for the boundaries(encircles) around some scatter points.[![enter image description here][2]][2]

As it is shown in the picture, I want to put GrainSize labels on the three encircled boundaries inside triangle. I am using geom_encircle() command from ggalt package with ggplot2.

For example: The plot above has 3 categories, Setosa, Versicolor and Verginica I want these labels to be placed on classification boundaries as well, Like the eclips of setosa should be labeled as setosa and similarly 2 other categories. I found ggforce package usefule but that is limited for eclips or circle shapes only, is there any way that I can put label on these three encircles(Setosa, Versicolor and Verginica)

I'm trying to colour the xend points in my dumbbell plot based on whether the x_diff value is positive or negative. Essentially, if the x_diff value is positive, I'd like the xend point coloured green, and if its negative, coloured red. I've attempted to define this in my data, but I come unstuck when I try and run this through ggplot the way I have the code written now. Does anyone have any suggestions that may help? Example code is below.

Thank you.

I am working on building a Shiny app for a college baseball team, however, I am having trouble getting the data points to show up on a scatterplot after adding a date input into the filtering. I have changed the date column to a date datatype and added it to the reactive function but nothing is still showing up.

Here is the code I have written so far:

I am trying to create a combined plot that includes a geom_point of all points and a polygon surrounding groups of data using geom_encircle. However, I only want specific groups encircled. I have some example code below to help illustrate.

I saw this interesting way of creating a publication timeline using geom_dumbell, so I created my own by first loading the libraries:

I am trying to generate a dumbbell plot in ggplot, while also trying to log transform the x and y axes. System throws an error that I can't understand. Looking for some help.

Here is the sample code:

I am creating a plot with the geom_xspline smoother for a small number of points and I would like to get the smoothed y values for all the integer values in the range of X. Any idea how to get them?