On Mon, Nov 29, 2010 at 3:33 PM, Lukáš Kubín <[email protected]> wrote:

> This doesn't comply with the given requirement of LineChart having a
> string-type column for x-axis values.
>

You can pass the DataView to the draw() method.  The first column of the
DataView is type 'string'.

Actually, I see this requirement baseless.
>

Having a numeric column as the first column creates ambiguity.  The chart
doesn't know whether to use the first column as values (and draw an x-axis
with no labels) or as labels.


>
> I wish to have the interaction between table and chart, so that manual
> sorting the table, updates the chart. But I can't find any method or
> parameter to hide some column  either from displaying in the chart or
> in the table/view. If I don't hide it, then I'll end up with having
> duplicate data columns either in the table or in the chart. That's
> misleading for the users.
>

You can create a DataView that hides the column and redraw the chart with
the DataView.


>
> kukacz
>
> On Mon, Nov 29, 2010 at 3:44 AM, chrissky <[email protected]> wrote:
> > Plan B: just clone the whole table but change the string type column
> > to a numeric. And use that cloned table for the chart. I have used
> > that approach on several occasions.
> >
> > On Nov 28, 4:44 am, Lukáš Kubín <[email protected]> wrote:
> >> Thanks chrissky. I can't add another column into the table, however,
> >> since it would be plotted in my chart as another series.
> >> I'm looking for some way how to use the LineChart or AreaChart without
> >> having to use a string-type column for x-asis. Or maybe a method of
> >> DataTable or DataView to sort string column by numeric indexes.
> >>
> >> kukacz
> >>
> >> On Sun, Nov 28, 2010 at 2:16 AM, chrissky <[email protected]> wrote:
> >> > Just add a numeric column to the table and copy the strings values by
> >> > row. Then sort on that column.
> >>
> >> > On Nov 27, 5:41 pm, kukacz <[email protected]> wrote:
> >> >> Hi,
> >> >> I need to sort a datatable, where first column is of a string type.
> It
> >> >> has to be a string since I'm creating a chart, where the first
> >> >> column's data form a x-axis series. The problem is the actual data of
> >> >> that column have numeric meaning.
> >>
> >> >> Still however, I wish to be able to resort the table dynamically
> while
> >> >> keeping the correct numeric order of rows, not a string order. Is
> >> >> there some way how to do this?
> >>
> >> >> Just to illustrate the unwanted behaviour, following column:
> >> >> 512
> >> >> 1024
> >> >> 4096
> >>
> >> >> is being incorrectly resorted by string algorithm to:
> >> >> 1024
> >> >> 4097
> >> >> 512
> >>
> >> >> Thank you.
> >>
> >> >> kukacz
> >>
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