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I'm experiencing some unexpected behaviour with progress bars in a little-endian format ganttchart environment. For example, with the MWE below:

\documentclass[crop]{standalone}

\usepackage{tikz}
\usepackage{pgfgantt}


\begin{document}
\begin{ganttchart}[
expand chart=30cm,
time slot format=little-endian
]{01-10-2023}{01-12-2024}


    \ganttbar[inline,progress=10]{}{01-11-2023}{01-10-2024}\\
    \ganttbar[inline,progress=20]{}{01-11-2023}{01-10-2024}\\
    \ganttbar[inline,progress=30]{}{01-11-2023}{01-10-2024}\\
    \ganttbar[inline,progress=40]{}{01-11-2023}{01-10-2024}\\
    \ganttbar[inline,progress=50]{}{01-11-2023}{01-10-2024}\\
    \ganttbar[inline,progress=60]{}{01-11-2023}{01-10-2024}\\
    \ganttbar[inline,progress=70]{}{01-11-2023}{01-10-2024}\\
    \ganttbar[inline,progress=80]{}{01-11-2023}{01-10-2024}\\




\end{ganttchart}
\end{document}

I find the following output: enter image description here

The displayed progress bar reaches a maximum, which is not the requested progress. The log contains the following error:

! Dimension too large.
<recently read> \pgfmath@x

l.20 ...ine,progress=50]{}{01-11-2023}{01-10-2024}
                                                  \

I can't work with sizes bigger than about 19 feet.
Continue and I'll use the largest value I can.

This error is repeated for all the affected ganttbar calls. The problem persists for all reasonable expand chart sizes I can think to try (i.e. cm-scale), and all reasonable chart limits (i.e. year-scale). I cannot reproduce the problem for charts measured in integers (e.g. \begin{ganttchart}[...]{1}{5} etc). All help much appreciated, thanks!

William Barker
  • 11
  • 30cm is reasonable? The rest has to do with pgfmath which uses 1pt for 1. – John Kormylo Oct 07 '23 at 12:39
  • Many thanks @JohnKormylo, so I guess e.g. 10cm is more reasonable for expand chart? Either way, following the trail of pgfmath, it seems this post might be helpful. However after lots of experimentation with x unit I cannot find any change: the progress is still stuck at 50%. – William Barker Oct 07 '23 at 22:47
  • I've never used pgfgantt, but you can create a progress bar using only \framebox and \rule. – John Kormylo Oct 08 '23 at 01:36

0 Answers0