Pete,
I can't speak for the TC but I do think that charts are always backed by
a table.
I base that on the language in 10.2 that reads:
> The chart data is specified by the |<chart:plot-area>| element's
> |table:cell-range-address| attribute. The |<chart:plot-area>| element
> represents the visualization container of all data series in the chart.
>
I think the "may" language in the second list item is unfortunate and
mis-leading.
What was intended (utter speculation on my part) was to distinguish when
data is specified in the <chart:chart> element and therefore "not" in
the document, versus being specified in the document and hence not
inside the <chart:chart> element. Even as I write that I find it
unconvincing and wonder why it would be worthy of note.
So, there are two cases: a <table:table> element inside <chart:chart> or
the value of the table:cell-range-address attribute of the
<chart:plot-area> element.
Note that the new "navigation" links that Michael has created enable the
reader to quickly go to <chart:plot-area> and then to the definition of
the table:cell-range-address attribute, 18.946. Which does appear to
presume that tables are being addressed but does not explicitly say so.
So, I think the answer is yes, all charts are backed by tables but that
your question does raise the question of the need to make the
table:cell-range-address attribute a bit more specific about what it can
address.
(Apologies for bragging a bit on Michael's work on the cross-referencing
but I have found it very valuable. I think it is going to result in a
much tighter ODF 1.2.)
Hope you are having a great day!
Patrick
Pete Brunet wrote:
>
> Hi, I have not yet received a response from the TC.
>
> *Pete Brunet*
>
> IBM Accessibility Architecture and Development
> 11501 Burnet Road, MS 9022E004, Austin, TX 78758
> Voice: (512) 838-4594, Cell: (512) 689-4155
> Ionosphere: WS4G
>
>
>
> *Pete Brunet/Austin/IBM@IBMUS*
>
> 08/01/2008 04:29 PM
>
>
> To
>
> cc
>
> Subject
> [office] Are all charts always backed by a table?
>
>
>
>
>
>
>
>
>
>
> For accessibility purposes the AccSC needs to know if all ODF charts
> are *always* backed by a table. (Tables are accessible and easier to
> navigate and interpret.) Due to the use of the word "may" in sections
> 10.2 and 10.3 of the spec, it's not clear that all charts are *always"
> backed by a table. Could someone please clarify this? Does the text
> need to be touched up?
>
> 10.2 Introduction to Chart Documents
> Chart documents are always contained within other XML documents. There
> are two types of chart container documents:
>
> * Documents that do not provide data for the chart: The chart data
> is contained in a <table:table> element inside the <chart:chart>
> element.
> * Documents that provide data for the chart: The chart data *may
> be* contained in a <table:table> element in the parent document,
> for example, in a spreadsheet or text document.
>
>
> 10.3 <chart:chart>
> The <chart:chart> element represents an entire chart, including
> titles, a legend, and the graphical object that visualizes the
> underlying data called the plot area. The data underlying the chart is
> represented by a table element. This element *may also exist* for
> embedded charts that get the data from the container document. In that
> case the chart can be rendered without getting the data from the
> container document.
>
> Thanks,*
> Pete Brunet*
>
> IBM Accessibility Architecture and Development
> 11501 Burnet Road, MS 9022E004, Austin, TX 78758
> Voice: (512) 838-4594, Cell: (512) 689-4155
> Ionosphere: WS4G
