ArrayList in Graphiew

Question

I have two double ArrayList (ArrayList) how can I pass these arrayLists to GraphView to draw my linear chart? for limited points we can use these codes :

GraphView graph = (GraphView) findViewById(R.id.graph);
LineGraphSeries<DataPoint> series = new LineGraphSeries<DataPoint>(new   DataPoint[] {
      new DataPoint(0, 1),
      new DataPoint(1, 5),
      new DataPoint(2, 3),
      new DataPoint(3, 2),
      new DataPoint(4, 6)
});

but my ArrayLists have thousands points!

for example: ArrayList X=[1, 4, 5, 5, 8 ,8 ,......] and ArrayList Y=[10, 45, 57, 54, 18, 81 ,......] — Farshid Civil, Jul 07 '16 at 09:28

Sathish Kumar J · Answer 1 · 2016-07-07T10:34:28.520

0

You can do like,

LineGraphSeries<DataPoint> series = new LineGraphSeries<DataPoint>(new   DataPoint[] {
  new DataPoint(X[0], Y[0]),
  new DataPoint(X[1], Y[1]),
  new DataPoint(X[2], Y[2]),
  new DataPoint(X[3], Y[3]),
  new DataPoint(X[4], Y[4])
});

OR

If u have bulk of data means use `for loop`

this may helps you.

edited Jul 07 '16 at 10:34

answered Jul 07 '16 at 09:37

Sathish Kumar J

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thanks for replay, but my arraylists have thousands and thousands points how can I use your code? using a "for" loop? – Farshid Civil Jul 07 '16 at 09:44
yeah yo can use for loop – Sathish Kumar J Jul 07 '16 at 10:28
it doesn't work...when I put for loop in the LineGraphSeries, I've got an error. the error is ";" expected... but everything is OK and the ";" has been entered – Farshid Civil Jul 08 '16 at 06:49

score 0 · Answer 2 · edited Jun 20 '20 at 09:12

0

If you want to populate the LineGraphSeries with 1000 point then you should consider to define a list and pass this when you construct the object of the LineGraphSeries class

Example

List<DataPoint> myPointList = ....
LineGraphSeries<DataPoint> series = new LineGraphSeries<DataPoint>(Arrays.asList(myPointList));
....

edited Jun 20 '20 at 09:12

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answered Jul 09 '16 at 13:35

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ArrayList in Graphiew

2 Answers2

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