# Requirements for plotting

There are no requirements in order to run PredictMD–you can train, run, and evaluate models without installing any additional software. However, in order to generate plots (e.g. ROC curves), you need to install LaTeX on your system. See below for instructions on installing LaTeX.

Once you have installed LaTeX, you can test PredictMD's plotting functionality by running two lines in Julia:

import Pkg
Pkg.activate("PredictMDEnvironment"; shared = true)
ENV["PREDICTMD_TEST_GROUP"] = "test-plots"
Pkg.test("PredictMD")

If you do not want to install LaTeX on your computer, you can use the Docker image.

## Installing LaTeX

To confirm that LaTeX is installed on your system, open a terminal window and run the following command:

latex -v

You should see an output message that looks something like this:

pdfTeX 3.14159265-2.6-1.40.18 (TeX Live 2017)
kpathsea version 6.2.3
Copyright 2017 Han The Thanh (pdfTeX) et al.
There is NO warranty.  Redistribution of this software is
covered by the terms of both the pdfTeX copyright and
the Lesser GNU General Public License.
Compiled with xpdf version 3.04