Hello ChartMan, Laurenty,
I seem to have bumped into this exact issue about 5 years later (october
2015). Sadly it seems it is still impossible in the JavaCharts JS API to
apply formatting/a pattern to a DataView.
In my case
var percPattern = view.getColumnPattern(1);
alert(JSON.stringify(percPattern)); // echo's "0.0%"
view.setColumns([0, { sourceColumn: 1, label: 'Coolness factor', type:
'number', ]);
alert(JSON.stringify(view.getColumnPattern(1))); // echo's "0.0%"
I am looking for a way to maintain the formatting, something like:
view.setColumns([0, { sourceColumn: 1, label: mbmChart.vAxisTitle, type:
'number', pattern: '#,#%' } ]); // '#,#%'
Or even a DataView.setColumnPattern() method to match the getter. But sadly
there is no such thing.
Am I missing something..?
Regards,
Bart
On Monday, July 12, 2010 at 6:55:51 PM UTC+2, laurenty wrote:
>
> Hi ChartMan,
>
> Let's say I have a DataTable with 3 columns: name (string), value1
> (number) and value2 (number)
> and I am formatting columns 1 and 2 with NumberFormat to display as
> percentages.
> I then create a DataView that will have a 4th column using 'calc' as a
> sum of columns 1, 2.
> There is no way to format the new calculated column as a percentage
> because cannot be used with DataView.
>
> Am I missing something?
>
> Thanks
>
> Laurent
>
> On Jul 12, 1:19 am, ChartMan <[email protected]> wrote:
> > Not sure what you are requesting here, if there are any standing issues
> > please describe the bug
> > or the feature request you are looking for.
> >
> > Thanks
> > ChartMan
> >
> > On Sun, Jul 11, 2010 at 8:43 PM, laurenty <[email protected]> wrote:
> > > Adding extra columns to the DataTable wouldn't work in this case as I
> > > have several views based on the same table and use them with charts.
> > > So you're saying that DataView supports calculated columns but that
> > > there is no way to format the data? That sounds like a design flaw to
> > > me...
> >
> > > I might just need to do all the calculations and formatting on the
> > > server side and use multiple DataTable objects, but this seems
> > > inefficient.
> >
> > > Thanks
> >
> > > Laurent
> >
> > > On Jul 10, 4:30 pm, KeithB <[email protected]> wrote:
> > > > Hi Laurent,
> >
> > > > It looks like Formatters (a PatternFormat in this case) can only be
> > > > applied to DataTables, not DataViews,
> >
> > > >
> http://code.google.com/apis/visualization/documentation/reference.htm...
> >
> > > > Can you specify the name/type/format of the computed column when
> > > > creating the DataTable and leave the values null until you create
> the
> > > > DataView?
> >
> > > > Good luck,
> > > > K
> >
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