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Subject: Re: [office] Are all charts always backed by a table?
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 > office@lists.oasis-open.org > 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
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