using Plots
gr()
# Create a plot
plot([1, 2, 3], [4, 5, 6], label="Data 1")
# Erase previous data plots
plot!([], [], label="Data 2")
plot!([], [], label="Data 3")
Option 1: Using the `plot!` function
One way to erase previous data plots in Julia using the Plots package is by using the `plot!` function. This function allows us to add new data to an existing plot or modify existing data. By passing empty arrays as arguments to `plot!`, we can effectively erase previous data plots.
using Plots
gr()
# Create a plot
plot([1, 2, 3], [4, 5, 6], label="Data 1")
# Erase previous data plots
plot!([], [], label="Data 2")
plot!([], [], label="Data 3")
Option 2: Re-creating the plot
Another way to erase previous data plots is by re-creating the plot from scratch. This involves calling the `plot` function again with the desired data and settings. By doing so, the previous plot will be replaced with the new one.
using Plots
gr()
# Create a plot
plot([1, 2, 3], [4, 5, 6], label="Data 1")
# Erase previous data plots
plot([1, 2, 3], [4, 5, 6], label="Data 2")
plot([1, 2, 3], [4, 5, 6], label="Data 3")
Option 3: Clearing the plot
A third option is to clear the plot entirely using the `cla` function. This function removes all data plots and resets the plot to its initial state. After clearing the plot, new data can be added using the `plot` or `plot!` functions.
using Plots
gr()
# Create a plot
plot([1, 2, 3], [4, 5, 6], label="Data 1")
# Erase previous data plots
cla()
plot([1, 2, 3], [4, 5, 6], label="Data 2")
plot([1, 2, 3], [4, 5, 6], label="Data 3")
In terms of simplicity and readability, Option 1 using the `plot!` function is the best choice. It allows for easy modification of existing plots without having to recreate the entire plot. However, the choice ultimately depends on the specific requirements and preferences of the user.
