| RE: [birt-charting-dev] Chart functional specifications update - MeterCharts |
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Hi Sheldon, Thank you for the specifications of this
dial type. I have a few questions: In case of multiple dials, did you
consider as an alternative to show them next to each other, like we do for pie
charts? I think one of the advantages of this approach is to allow
multi-coloring of one given region, to act as a dashboard indicator. For
instance if the temperature is higher than 50, the region color could change to
red, then if the needle goes in the red, the user knows it requires specific
attention. It also minimizes the complexity of the chart graphics, as it’s
easier to read three separate dials than three superimposed dials (imagine if
your car speedometer, engine rotation counter, and gas tank indicator were all
in one same dial with three needles). Regarding the model, I thought DialRegion
would in fact be DialSeries in the types.xsd. I also assume this new type falls
in the ChartWithoutAxes category. If we follow my suggestion above, it seems
Dial and DialRegion will fusion together. If we keep the current design, maybe
Dial should subclass ChartWithoutAxes instead of being a component, or maybe
the other way would be to make it a ChartWithAxes and subclass the Axis
interface with a DialAxis (Dial). Thanks, David From:
birt-charting-dev-bounces@xxxxxxxxxxx [mailto:birt-charting-dev-bounces@xxxxxxxxxxx]
On Behalf Of Sheldon Lee-Loy
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