Plotting

The Basics

The most basic plots are line plots. Assuming you have installed Plots.jl via Pkg.add("Plots"), you can plot a line by calling plot on two vectors of numbers. For example:

Additionally, we can add more lines by mutating the plot object. This is done by the plot! command. Let's add another line to our current plot:

To add further description to our visualized data, we can add "attributes" by using some of the following parameters to our plot() command.

For a more extensive list of different attributes available in the Julia Language click here

Plotting Symbolic Expressions

Using the SymPy package allows Julia, which typically only serves for numerical computation, can serve as a Computer Algerbra System. The SymPy package can perform simple calculus derivatives, integrals, limits and series expansions

Ex:

using SymPy
    @vars x y z
    diff(cos(x) + sin(y) + exp(-x) * cos(y), x)

Plotting a symbolic expression is done by coercing the expression into a function. For simple plots, this happens behind the scenes:

using CalculusWithJulia
    @vars x
    f(x) = sin(x)
    plot(f(x), -pi/2, pi/2)