[vtkusers] Update the data in vtk xy chart

[Jothybasu Selvaraj]

First ClearPlots()

then use AddPlot() to add the new lines like

vtkPlot *line = this->chart->AddPlot(vtkChart::LINE);
line->SetInput(table, 0, 1);

table contains your new value.

Then Render()

Jothy



On Fri, Mar 16, 2012 at 12:39 PM, Gishara Indeewarie <gish.777 at gmail.com>wrote:

> Thanks a lot Jothy. But when I call  vtkChartXY::ClearPlots()  , I dont
> get any output.
> If I did not call it, I get a new window each time I update the data.
> I am using vtk mfc renderer to render data.
>
>
> On Fri, Mar 16, 2012 at 6:05 PM, Jothybasu Selvaraj <jothybasu at gmail.com>wrote:
>
>> call vtkChartXY::ClearPlots() then Render() after adding new data.
>>
>> Jothy
>>
>>
>>
>> On Fri, Mar 16, 2012 at 12:25 PM, Gishara Indeewarie <gish.777 at gmail.com>wrote:
>>
>>> Hi all,
>>>
>>> I am using vtk xy chart example (
>>> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Plotting/LinePlot) to plot a
>>> graph.
>>> I want to update the data inside the graph every time user presses a
>>> button.
>>> (I am using different data sets)
>>> I followed the following thread, but with no luck.
>>>
>>> http://vtk.1045678.n5.nabble.com/How-to-get-output-of-vtkChartXY-on-existing-render-window-td5526899.html
>>>  .
>>> As soon as I start the interactor the window get crashed when closing.
>>> Please suggest me how can I achieve this.
>>> Thanks a lot.
>>>
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>>
>>
>> --
>> Jothy
>>
>>
>
>
> --
> Gish
>



-- 
Jothy
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