How to add color scales to ODF?

[Kohei Yoshida]

On Fri, May 11, 2012 at 11:50 AM, Kohei Yoshida <kohei.yoshida at gmail.com> wrote:

> My gut feeling (totally unscientific and may be illogical) tells me
> that wedging this information into the style section may not be the
> cleanest approach.  I could, however, imagine we define these color
> scales elsewhere, and reference them from the style section somehow,
> either by name or by index.  Or just totally leave it outside the
> style section.  Somehow I tend to think that this feature behaves more
> like a database range, chart source range, or pivot table data source,
> than conditional formatting.  And based on how Markus is implementing
> it so far even in the core, the color scale data is separated stored
> than the conventional conditional formatting data.

Actually I'll take a step back from this.  The existing conditional
formatting implementation *does* have the concept of ranges.  For
instance, unique values condition only makes sense when it's applied
to a range of cells.  So, color scales may be considered a logical
extension of the conventional conditional formatting.

Come to think of it, how are we dealing with these unique values,
non-unique values conditions in ODF, which has similar range
requirement to color scales (and data bars)?

Kohei