[ https://issues.oasis-open.org/browse/OFFICE-3936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=67867#comment-67867 ]
Andreas Guelzow commented on OFFICE-3936:
-----------------------------------------
In Gnumeric:
chart:minimum="2"
chart:maximum="2048"
chart:interval-major="0.602059991327962" [= log10(4)]
chart:interval-minor-divisor="4"
yields major ticks at 4, 16, 64, ...
chart:minimum="0.1"
chart:maximum="2048"
chart:interval-major="0.602059991327962" [= log10(4)]
chart:interval-minor-divisor="4"
yields ticks 0.25, 1, 4, 16, 64,...
> logarithmic scale misses information about basis
> ------------------------------------------------
>
> Key: OFFICE-3936
> URL: https://issues.oasis-open.org/browse/OFFICE-3936
> Project: OASIS Open Document Format for Office Applications (OpenDocument) TC
> Issue Type: Improvement
> Components: Chart
> Affects Versions: ODF 1.2
> Reporter: Regina Henschel
> Fix For: ODF 1.3
>
>
> http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part1.html#property-chart_interval-major
> Although the basis 10 is widely used, others a common too, e.g basis 2 for audiogram.
> This proposal adds not only the basis but additional details to the description of chart:interval-major and chart:interval-minor-division.
> Specifications are not only read by developers but by authors of guides and tutorials too. For those the mathematic impact of the attributes values might be not obvious.
> Formulas in the proposal are written StarMath.
> I think, that logarithmic scale should only be allowed for a value-axis, but have not included that in this proposal.
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