- From: Chris Tilbury <C.J.Tilbury@estate.warwick.ac.uk>
- Date: Fri, 7 Jul 1995 09:39:53 BST
- To: www-html@www10.w3.org
On 6 Jul 95 at 23:00, Alexei Kosut wrote: > We currently have the TABLE tag and its enclosed elements, which > allow us to create a table of data, something like this (for > example): [snip] > We take the basic TABLE spec, as is, and add an attribute to the > main TABLE tag, the CHART element. If present, it would define a > type of chart, and the browser would take the following table data > and attempt to convert it into a graph. For example, to create the > above, I might use <TABLE BORDER CHART=bar>. We could define a > couple basics, say bar,line, pie and chart. Everything else > (including 2D vs. 3D) could bedone via style sheets. Well, actually, > charts could be done viastyle sheets entirely too, but I think that > HTML needs to stand onits own without them, and this would be a good > feature to add directly to the spec. [snip] Here's my two-penneth contribution towards this one :-) In the HTML document <TABLE CLASS="ChartFormat1"> <CAPTION> Descriptive text about what this data represents </CAPTION> <TR CLASS="DataHead"> <TH>Object Name</TD> <TH>Width (meters)</TD> <TH>Height (meters)</TD> <TH>Breadth (meters)</TD> </TR> <TR CLASS="Set1"> <TH>Blue Cube</TH> <TD>10</TD> <TD>7</TD> <TD>9</TD> </TR> <TR CLASS="Set2"> <TH>Black Cube</TH> <TD>5</TD> <TD>9</TD> <TD>16</TD> </TR> <TR CLASS="Set3"> <TH>Mauve Cube</TH> <TD>9</TD> <TD>18</TD> <TD>23</TD> </TR> </TABLE> Then, in your style sheet ... Table.ChartFormat1 : renderstyle.type = 2dbar Table.ChartFormat1 : data.header = DataHead Table.ChartFormat1 : data.sets = Set1, Set2, Set3 The rest can be inferred by the location of the TH header elements within each Row. This is slightly basic; it could probably be extended to include styles for functions such as the visual "angle" or tilt of a 3d chart, exploding portions of a pie chart, i.e Table.ChartFormat : renderstyle.type = 3dpie Table.ChartFormat : renderstyle.angle = 30 Table.ChartFormat : renderstyle.thickness = 10 Table.ChartFormat : data.header = dataHeaderClass Table.ChartFormat : data.sets = Set1 TD.ExplodeThisEntry : datasetstyle.type = exploded TD.ExplodeThisEntry : datasetstyle.size = 10 Why do I think this should be entirely left up to the Style Sheet mechanisms, with no attributes added to the table element? What the table element represents, in this case, is a collection of data. At present, this data is rendered (or presented) in the form of a table, constructed using Rows, and Cells within those Rows, using the <td>, table data, element or <th>, table header, element. The precise rendering of that data is really not a content issue, which the HTML markup describes, but a presentation issue, which should be managed not in the markup, but in style sheets. > Comments? Anyone else have any? Regards, Chris -- Chris Tilbury, Estates Office, University of Warwick, UK, CV4 7AL Tel: +44 1203 523523 x2665 Fax: +44 1203 524444 MIME mail welcomed mailto:Chris.Tilbury@estate.warwick.ac.uk
Received on Friday, 7 July 1995 04:40:42 UTC