A LaTeX formula reference and editing tool
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An off-line reference of math-related LaTex symbols and operators, giving you quick a reminder to the obscure or unfamiliar Latex codes when composing without quick access to inernet.
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Converts LaTex formula to png image file with control of image resolution.
Developed and tested in Linux. Might work in Mac.
- Python 2 or 3
- PyQt5 (python module)
- latex (
texlive-coreandtexlive-latexextrapackages) - convert (part of the ImageMagick suite)
- Download the zip file and unzip it to local disk.
- Change into its directory.
- Make tex2im executable:
chmod +x ./tex2im/tex2im. - Run
python latex_formula_editor.py
Issue After typing in the formula and hitting "Render", an error message of "Failed to render image. Please re-check your formula" appears below.
Solution
Please make sure texlive-core and texlive-latexextra are installed and working.
Then make sure the tex2im/tex2im file has execution permission.
If the error still persists, check out the problem below.
Issue
After typing in the formula and hitting "Render", an error message of
"Failed to render image. Please re-check your formula" appears below.
texlive-core and texlive-latexextra are both installed and working, and
tex2im has execution permission.
Solution
Open up a terminal and cd into the tex2im folder, run the following test command:
tex2im "\sum_{i=0}^5 x_i^2"
If this error message is printed out:
convert: attempt to perform an operation not allowed by the security policy `gs' @ error/delegate.c/ExternalDelegateCommand/378.
Then this is a problem related to ImageMagic. See this stackoverflow post for more information.
Personally I use an arch-based Linux OS, and this fix worked for me:
Edit the /etc/Imagemagic-7/policy.xml file, and comment out this line:
<policy domain="delegate" rights="none" pattern="gs" />
This project incorporates with minor changes of tex2im, which provides the LaTeX image rendering functionality. The files of tex2im can be found in the subfolder with same name.