Chart proposals (part 1)

[Michael Brauer - Sun Germany - ham02 - Hamburg <Michael.Brauer@Sun.COM>]

Hi,

please find below two proposals for chart extensions (some more will 
follow in the next days):

Chart Sort By X Values
----------------------

(formatting property, to be added Between Section 15.30.4 and 15.30.5)

The attribute chart:sort-by-x-values is applicable for chart types with 
data series that contain x-values (e.g. scatter charts). X-values are 
usually given as the first chart:domain sub-element (see section 10.9.1) 
of a <chart:series> element. The attribute chart:sort-by-x-values 
determines whether the data points of a data series should be displayed 
in ascending order of the x values (true), or in the order they are 
contained in the underlying data (false). The attribute can be used 
within styles that are assigned to the <chart:plot-area> element.

<define name="style-chart-properties-attlist" combine="interleave">
	<optional>
		<attribute name="chart:sort-by-x-values">
			<ref name="boolean"/>
		</attribute>
	</optional>
</define>

Treatment of Empty Cells
------------------------

(formatting property, to be added to section 15.30

he chart:treat-empty-cells attribute specifies how missing and invalid 
values are missing are plotted. If the attribute value is "use-zero" all 
missing values are replaced with zero. If the attribute value is 
"leave-gap" nothing is plotted for that point and a continuous plot is 
interrupted - for example the line in a line chart stops at the previous 
valid point and starts again at the next valid point. If the attribute 
value is "ignore" nothing special is plotted for that point and the plot 
is continued.

The default behavior is "ignore" for scatter charts (chart:class is 
"chart:scatter"). For all other chart types the default behavior is 
"leave-gap". This attribute can be used within styles that are applied 
to a <chart:plot-area> element.

<define name="style-chart-properties-attlist" combine="interleave">
	<optional>
		<attribute name="chart:treat-empty-cells">
			<choice>
				<value>use-zero</value>
				<value>leave-gap</value>
				<value>ignore</value>
			</choice>
		</attribute>
	</optional>
</define>

Best regards

Michael


-- 
Michael Brauer, Technical Architect Software Engineering
StarOffice/OpenOffice.org
Sun Microsystems GmbH             Nagelsweg 55
D-20097 Hamburg, Germany          michael.brauer@sun.com
http://sun.com/staroffice         +49 40 23646 500
http://blogs.sun.com/GullFOSS