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README.md

mathpix

Project Status: Active - The project has reached a stable, usable state and is being actively developed. CRAN_Status_Badge packageversion Last-changedate

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Installation:

mathpix is now on CRAN, so you can install using

install.packages("mathpix")

If you’re after newer development features (if there are any); you can install from GitHub using

devtools::install_github("jonocarroll/mathpix")

Authentication

The free API key has been removed due to overuse. Please sign up at https://dashboard.mathpix.com/ then save your ID and key in your .Renviron file as

MATHPIX_APP_ID='yourid'
MATHPIX_APP_KEY='yourkey'

Note that this requires you to accept Mathpix’s terms and conditions and sign up for any relevant pricing scheme.

You can check that your credentials are loaded correctly with credentials().

Usage

If you have an image you would rather properly encode in LaTeX, for example

then simply calling

mathpix("./integral.jpg")

(with the appropriate path to the file) will insert a LaTeX block into your document which will render what the image represents

$$
 \int \frac { 4 x } { \sqrt { x ^ { 2 } + 1 } } d x  
$$

which renders to

Even complicated, hand-drawn figures work

mathpix("matrix_3x3.jpg")
$$
 A = \left( \begin{array} { l l l } { 2 } & { 7 } & { 3 } \\ { 3 } & { 5 } & { 2 } \\ { 9 } & { 4 } & { 1 } \\ \end{array} \right)  
$$

If your image only result in warnings and no LaTeX, use retry = TRUE to attempt some pre-processing of the image into a more amenable form. Unfortunately, there are still images which fail.

To not insert the resulting equation directly into your document, but rather store it in a variable, use insert = FALSE.

If you also wish to generate the images (although rmarkdown will gladly do this for you) this can be achieved using

render_latex(latex, fileDir)

where latex is the LaTeX generated by mathpix() (or any other escaped LaTeX) and fileDir is the (optional) directory where you wish to save the image (by default, a temp file). This requires that you have pdflatex set up correctly and available on your machine.

API Documentation

Refer to http://docs.mathpix.com/

About

Query the mathpix API to convert math images to LaTeX

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