I suppose you could write a package that compiles equations in subjobs, like so (call this package `imageeqn.sty`

):

```
\NeedsTeXFormat{LaTeX2e}[1994/12/01]
\ProvidesPackage{imageeqn}[2014/11/30 v0.1 Image equations]
\RequirePackage{graphicx}
\newwrite\@out
\newcounter{imageeqn}
\begingroup \catcode `|=0 \catcode `[=1
\catcode`]=2 \catcode `\{=12 \catcode `\}=12
\catcode`\\=12 |gdef|@ximageeqn#1\end{imageeqn}[|immediate|write|@out[#1]|end[imageeqn]]
|endgroup
\def\imageeqn{\kernel@ifnextchar [{\@imageeqn}{\@imageeqn[]}}
\def\@imageeqn[#1]{%
\stepcounter{imageeqn}
\immediate\openout\@out=\jobname-eqn-\arabic{imageeqn}.tex
\immediate\write\@out{\noexpand\documentclass[convert={density=288,outext=.png}]{standalone}}
\immediate\write\@out{\noexpand\usepackage{amsmath}}
\immediate\write\@out{\noexpand\begin{document}}
\immediate\write\@out{\noexpand$}
\newlinechar='15
\begingroup \catcode`\^^M=12 %
\let\do\@makeother\dospecials\obeyspaces%
\@ximageeqn}
\def\endimageeqn{%
\endgroup%
\immediate\write\@out{\noexpand$}
\immediate\write\@out{\noexpand\end{document}}
\immediate\closeout\@out
\immediate\write18{pdflatex --enable-write18 -interaction=nonstopmode \jobname-eqn-\arabic{imageeqn}.tex}
\begin{center}
\includegraphics[scale=0.25]{\jobname-eqn-\arabic{imageeqn}.png}
\end{center}}
```

This package (which I wrote by modifying `python.sty`

) defines an environment `imageeqn`

, which takes the equation inside of it, generates a tex file, compiles it to png, and then includes the resulting png using `\includegraphics`

. This can be used as follows (let's call this file `image.tex`

):

```
\documentclass{article}
\usepackage{imageeqn}
\begin{document}
Pythagorean theorem:
\begin{imageeqn}x^2 + y^2 = z^2.\end{imageeqn}
Some integral:
\begin{imageeqn}\Gamma(t) = \int_0^\infty x^{t-1} e^{-x} \, dx.\end{imageeqn}
\end{document}
```

Compile this with the command line:

```
pdflatex --enable-write18 image.tex
```

The result is a pdf file that has the two equations embedded as rasterized images. I'm not sure why you would ever want to do this, but I enjoyed myself trying to figure out how to do this anyway :)

This implementation is pretty limited by the way: first of all, it won't compile if you put `\end{imageeqn}`

on a new line. Second of all, it turns equations into text-style math (in dollar signs), so equation numbering, aligning, etc., are not supported.

**Solving the newline problem**

The first problem can be fixed, at least on Linux, by preprocessing the subjobs with `sed`

. This can be done by replacing:

```
\immediate\write18{pdflatex --enable-write18 -interaction=nonstopmode \jobname-eqn-\arabic{imageeqn}.tex}
```

in the above code by:

```
\immediate\write18{sed -i '/^$/d' \jobname-eqn-\arabic{imageeqn}.tex; pdflatex --enable-write18 -interaction=nonstopmode \jobname-eqn-\arabic{imageeqn}.tex}
```

**Using preprocessing to make **`\[`

, `\begin{equation}`

work

Making `\[`

, `\]`

, `\begin{equation}`

, `\end{equation}`

work can be done by preprocessing the input with `sed`

:

```
cat input.tex | sed 's|\\\[|\begin{imageeqn}|g' \
| sed 's|\\\]|\end{imageeqn}|g' \
| sed 's|\\begin{equation}|\begin{imageeqn}|g' \
| sed 's|\\end{equation}|\end{imageeqn}|g' \
> input2.tex
pdflatex --enable-write18 input2.tex
```

Perhaps `lualatex`

may be of help here, but I don't know anything about that.

## Best Answer

The error you're receiving is that

`thesis.cls`

is not available. This stems from`\documentclass{thesis}`

. My assumption is that, since you're unfamiliar with (La)TeX, you just assumed that if you want to write a thesis, you should use`thesis`

as your`\documentclass`

. However, this is obviously incorrect since the default distributions (MiKTeX and TeX Live) do not come with a`thesis.cls`

by default. Instead, start with something like`report`

or`book`

. Then click onQuick Buildto compile the document, after which you canView PDF.