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I require assistance with installing and configuring Matex and Ghostscript for use with Mathematica on my Mac system. I have successfully installed Matex and executed the following codes on Mathematica notebook provided in this link, resulting in expected outputs

<< MaTeX` MaTeX[HoldForm@Integrate[Exp[-x], {x, 0, Infinity}]] MaTeX["\\sum_{k=1}^{\\infty} \\frac{1}{k^2} = \\frac{\\pi^2}{6}", FontSize -> 24]

However, I am encountering difficulties installing Ghostscript on my system. I have attempted to run the following command in terminal -

gs -h

Output -

GPL Ghostscript 10.01.1 (2023-03-27) Copyright (C) 2023 Artifex Software, Inc. All rights reserved. Usage: gs [switches] [file1.ps file2.ps ...] Most frequently used switches: (you can use # in place of =) ...

But the Mathematica code utilizing Matex and Ghostscript is still not functioning. Can someone please assist me with the installation process of Ghostscript, preferably by providing step-by-step guidance? I am not well-versed in this matter. Thank you in advance for your help.

While I run the following command

Plot[x^2, {x, 0, 10}, Frame -> True, FrameLabel -> {{MaTeX["\\color{red}\\Omega_\\text{y}", FontSize -> 30], None}, {MaTeX["f \\;/\\; \\text{k}", FontSize -> 30], None}}]

I am getting the following error message - "MaTeX::texerr: Error while running LaTeX. ! Undefined control sequence. \color {red}\Omega \text {y} \MaTeX{\color{red}\Omega\text{y}} ! ==> Fatal error occurred, no output PDF file produced!"

The problem is coming from the part "\ \color{red}". If I remove this, there is no error.

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    $\begingroup$ Apparently, Ghostscript is installed on your system... Please describe what exactly happens when you try to use MaTeX. E.g., are there any error messages? Honestly, "still not functioning" is a quite useless description of the problem. It makes it very hard for others to guess what the cause is and how it can be resolved. $\endgroup$ Commented Apr 18, 2023 at 6:02
  • $\begingroup$ I've included the error I'm getting. Thanks in advance. $\endgroup$ Commented Apr 18, 2023 at 10:35
  • $\begingroup$ Since this issue had nothing to do with Ghostscript, can you please edit the title (and preferably also the question contents) so future readers wouldn't be confused? $\endgroup$ Commented Apr 21, 2023 at 15:52

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Apparently, you simply have to add the xcolor package to MaTeX preamle. Try

SetOptions[MaTeX, "Preamble" -> {"\\usepackage{xcolor}"}]
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    $\begingroup$ Indeed, thanks for answering. If there is a problem with Ghostscript, then MaTeX will not work at all. The fact that some commands succeeded shows that Ghostscript is fine. $\endgroup$ Commented Apr 18, 2023 at 12:56
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    $\begingroup$ @henrik-schumacher I am still getting the error. Kindly see here - imgur.com/a/oEzsLUk $\endgroup$ Commented Apr 21, 2023 at 15:42
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    $\begingroup$ Oops, MaTeX wants "Preamble" to be a list. (See my edit.) $\endgroup$ Commented Apr 21, 2023 at 15:48
  • $\begingroup$ @henrik-schumacher Thank you very much.It is finally working. Your kind response is much appreciated. $\endgroup$ Commented Apr 21, 2023 at 16:45
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    $\begingroup$ You're welcome! $\endgroup$ Commented Apr 21, 2023 at 22:03

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