Easier support for numbering sections within parts

[josephwright]

Originally reported by: Nicolas M. Thiéry (Bitbucket: nthiery, GitHub: nthiery)

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To number sections within parts, the best I could do:

\numberwithin{section}{part}
\AtBeginPart{\beamer@tocsectionnumber=0\relax}

The second bit was not quite intuitive to find. Could it be made so
that the first bit would automatically imply the second? If not, could
this trick (or anything better!) be documented? If it is and I missed
it, please accept my apologies!

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• Bitbucket: https://bitbucket.org/rivanvx/beamer/issue/66

[josephwright]

Original comment by Anonymous:

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I've been having the same problem. Unfortunately, the \AtBeginPart{\beamer@tocsectionnumber=0\relax} trick does not work for me, I get:

! Undefined control sequence.
\beamer@atbeginpart ->\beamer
                              @tocsectionnumber=0\relax

I managed to get the section numbers to reset by manually patching beamerbasesection.sty, but that's not a very good idea. There should be a simpler way for doing this?

[josephwright]

Original comment by Nicolas M. Thiéry (Bitbucket: nthiery, GitHub: nthiery):

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If this is put directly in a latex file, then one needs to use:

\makeatletter
\numberwithin{section}{part}
\AtBeginPart{\beamer@tocsectionnumber=0\relax}
\makeatother

[josephwright]

Original comment by Anonymous:

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Thanks, I've actually tried makeatletter...other before, it seems to work half: When I add

    \numberwithin{section}{part}

I get the error

 Package calc Error: `.' invalid at this point.

    See the calc package documentation for explanation.

which of course doesn't explain anything...

Wiith the tocsectionnumber=0 alone, my sections start at 1, but the slides (framenumer) number continues counting up (e.g., starting with 2.41 instead of 2.1 when the first lecture had 40 slides) sigh

[josephwright]

Original comment by Anonymous:

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Ok, an additional

    \AtBeginPart{\setcounter{framenumber}{0}}

resets the framenumbers for each part -- still pretty ugly, though...

[josephwright]

Original comment by Anonymous:

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Ok, an additional

    \AtBeginPart{\setcounter{framenumber}{0}}

resets the framenumbers for each part -- still pretty ugly, though...

[josephwright]

Original comment by Anonymous:

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Ok, an additional

    \AtBeginPart{\setcounter{framenumber}{0}}

resets the framenumbers for each part -- still pretty ugly, though...

[josephwright]

Original comment by Anonymous:

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sorry for the duplicates, it was not showing after "Update issue"...

Also, this only resets the numbering on the handouts, not on the slides, but this might be my (by now completely) messed up preamble.

[josephwright]

Original comment by Vedran Miletić (Bitbucket: rivanvx, GitHub: Unknown):

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Sure, I will look into this for next release.

[josephwright]

Original comment by Joseph Wright (Bitbucket: josephwright, GitHub: josephwright):

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The general LaTeX definition of \part is that it does not affect sections, etc. Altering this in beamer would not really be a good thing => WONTFIX.

[josephwright]

Original comment by Anonymous:

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second floor's solution works, thank you.