Change origin of plot in julia

When working with plots in Julia, you may sometimes need to change the origin of the plot. This can be useful when you want to focus on a specific region of the plot or when you want to align the plot with other elements in your visualization. In this article, we will explore three different ways to change the origin of a plot in Julia.

Option 1: Using the `xlim` and `ylim` functions

One way to change the origin of a plot in Julia is by using the `xlim` and `ylim` functions. These functions allow you to set the limits of the x and y axes, effectively changing the origin of the plot.


using Plots

# Create a simple plot
plot([1, 2, 3], [4, 5, 6])

# Set the limits of the x and y axes
xlims!([-2, 2])
ylims!([-2, 2])

In this example, we create a simple plot with three points. By setting the limits of the x and y axes to `[-2, 2]`, we effectively change the origin of the plot to the center of the plot. This means that the point `(0, 0)` will be at the center of the plot.

Option 2: Using the `Plots.axis` function

Another way to change the origin of a plot in Julia is by using the `Plots.axis` function. This function allows you to customize the properties of the axes, including the origin.


using Plots

# Create a simple plot
plot([1, 2, 3], [4, 5, 6])

# Customize the properties of the axes
axis!([:center, :center])

In this example, we create a simple plot with three points. By setting the properties of the axes to `[:center, :center]`, we change the origin of the plot to the center of the plot. This means that the point `(0, 0)` will be at the center of the plot.

Option 3: Using the `Plots.plot!` function

A third way to change the origin of a plot in Julia is by using the `Plots.plot!` function. This function allows you to add additional plots to an existing plot, effectively changing the origin of the plot.


using Plots

# Create a simple plot
plot([1, 2, 3], [4, 5, 6])

# Add an additional plot with negative coordinates
plot!([-1, 0, 1], [-1, 0, 1])

In this example, we create a simple plot with three points. By adding an additional plot with negative coordinates using the `plot!` function, we effectively change the origin of the plot to the center of the plot. This means that the point `(0, 0)` will be at the center of the plot.

After exploring these three options, it is clear that the best option depends on the specific requirements of your plot. If you simply want to change the origin of the plot without adding any additional plots, using the `xlim` and `ylim` functions (Option 1) is the most straightforward approach. However, if you need more flexibility in customizing the properties of the axes or if you want to add additional plots, using the `Plots.axis` function (Option 2) or the `Plots.plot!` function (Option 3) may be more suitable.

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