Assignment9

The file assignment9.jl has a function z(Ppr, Tpr) that will return the $z$ expansion factor for a gas. Your assignment is to use that function to create the following plot that shows a range of correlation curves.

Implement your plotting code in the function z_plot() and have it return the plot object. Below are some tips to get things just right.

1. The pseudoreduced pressure $P_{pr}$ should range from 1 to 15 in steps of 0.1

2. The pseudoreduced temperature $T_{pr}$ curves should range from 1.15 to 3.0 in steps of 0.05.

3. Use $\LaTeX$ fonts in your axis and legend labels. You may need to add the package LaTeXStrings to your project environment. The $\LaTeX$ code for generating a symbol $T_{pr}$ is T_{pr}. See the LaTeXStrings package documentation to see how to use it and do string interpolation.

4. Set the legend position to be outerright and set the legend font size to be 5. See the Plots.jl attributes documentation for the exact keywords.

5. You don't need to specify the colors of the lines in any way. Just use the default color cycle.

Testing

To see if you answers are correct, run the following command at the Terminal command line from the repository's root directory

julia --project=. -e "using Pkg; Pkg.test()"

the tests will run and report if passing or failing.

After you have the tests passing on Github, check back in on the repository on Github and look for a new branch called create-pull-request/patch to view the PDF that was automatically generated. This demonstrates how to include a Plots.jl figure in a document and have the math fonts in the figure and in the text match exactly.