B4J Question How to clear a Chart?

[positrom2]

I have added a series of points to a Scatterchart using Adddata:

For j=3 To steps-2
    AddData(GetdataMaxr, j*stepp, maxr_array(j,0))
Next

Usually, I remove that series prior to adding a new series of points to avoid filling up the memory space:

GetdataMaxr.RunMethod("remove",Array As Object(SeriesJO))

Occasionally, however, I wish to keep a series of plotted points to compare with a previous series.
This I do by once omitting the "remove" method. That preserves a previous plotted series and a new series of plotted additionally.
However, when the screen has been messed up by repeatedly omitting the "remove" method, how to clear the Chart, i.e. remove also the "old" data points?

 

[positrom2]

I found this
https://community.oracle.com/thread/2448582?tstart=0

lineChart.getData().clear();
will remove all the series from the chart.

but how to implement it?

 

[stevel05]

Are you running from the examples from the forum? In which case it would be similar to adding the data series:

'Assuming Linechart and LCGetData are JavaObjects
LCGetData=LineChart.RunMethod("getData",Null)
LCGetData.RunMethod("clear",Null)

If this isn't the case, please zip and post your code.

 

[positrom2]

Thanks stevel05, the "Null" I never will learn. It works.