OFFICE-3928 - Write pos/size for both plot-area and coordinate-region?

[Regina Henschel <regina.henschel@libreoffice.org>]

Hi members,

I'm not sure, that we should force the producer to calculate the 
pos/size of the <chart:plot-area> element. If these attributes are 
missing and the consumer does not know the new <chart:coordinate-region> 
element, he can act the same way as now: In case pos/size are missing, 
the consumer decides about pos/size.

Forcing the producer to calculate the pos/size of the <chart:plot-area> 
element requires a different, more complicate structure in the schema, 
because you need to group attributes with an element. I will start with 
that only, if you are sure about forcing the producer to calculate the 
pos/size of the <chart:plot-area> element.

My suggestion would be, not to force but only recommend it.
For example, add to the new section 11.x <chart:coordinate-region> the 
following text.

"If a producer writes the element <chart:coordinate-region> he should 
write the svg:x, svg:y, svg:width, and svg:height attributes of the 
<chart:plot-area> element too for to increase interoperability with 
consumers, which are not able to evaluate the <chart:coordinate-region> 
element."

Kind regards
Regina