Connect points in scatter plot by lines

[Andreas Burger]

Hi all,

is it possible to connect points in a Jzy3d scatter plot by lines?
If so, please could someone give me a short example?

Best regards, Andreas

[Martin Pernollet]

Andreas,

I see two ways:

1) using the existing LineStrip & Scatter (or MultiColorScatter*) objects. Although being distinct objects, they can look like a single object and might have the advantage to also be drawn separately.

2) looking at the implementation of these two classes, and implement your ConnectedScatter based on the Open GL primitives

Cheers,

Martin

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[Andreas Burger]

Thank you. Your first way works fine.

Regards, Andreas

2013/8/13 Martin Pernollet <martin.p...@gmail.com>

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Andreas Burger

Wendtstr. 13

76185 Karlsruhe

[kx1...@gmail.com]

Hey Andreas,

 

I have a problem in  Iterator part. It might be a stupid problem.;(

 

Sorry about this.

 

The code is as follow:

 

public class Drawing extends AbstractDemo{

public static void main(String[] args) throws Exception {

DemoLauncher.openDemo(new Drawing());

}

public Drawing(){

}

public void init(){

//int size = 500000;

int size = 10;

float x;

float y;

float z;

LineStrip ls = new LineStrip();

//List<Coord3d> ls =new ArrayList<Coord3d>();

Coord3d[] points = new Coord3d[size];

// Create scatter points

for(int i=0; i<size; i++){

x = (float)Math.random() - 0.5f;

y = (float)Math.random() - 0.5f;

z = (float)Math.random() - 0.5f;

points[i] = new Coord3d(x, y, z);

Point lscolor = new Point(points[i], Color.RED);

ls.add(lscolor);

}

// Create a drawable scatter with a colormap

Scatter scatter = new Scatter(points, Color.YELLOW);

scatter.setWidth(7f);

// Create a chart and add scatter

Chart chart = new Chart();

chart.getAxeLayout().setMainColor(Color.WHITE);

chart.getView().setBackgroundColor(Color.BLACK);

chart.getScene().add(scatter);

ChartLauncher.openChart(chart);

chart.setAxeDisplayed(true);

chart.setViewMode(ViewPositionMode.FREE);

Iterator<LineStrip> lsIterator = this.lineStrips.iterator();

while (lsIterator.hasNext()) {

chart.getScene().getGraph().add(lsIterator.next());

}

}

}

 

If I define the line like

List<Coord3d> ls =new ArrayList<Coord3d>();

It can not use ls.add to add the point.

But it can use Iterator.

 

But if I define like

LineStrip ls = new LineStrip();

It can not use the Iterator.

 

Could you please tell me how to handle it, please?

I really appreciate it.

 

Best,

Nina

在 2013年8月13日星期二UTC-4上午5时18分49秒，Andreas Burger写道：

[Andreas Burger]

Hi Nina,

the iterator part in my code was only to add linestrips for more than one point programatically.

So here a small example to draw a linestrip between two points.

LineStrip ls = new LineStrip();

// add source point for the linestrip

ls.add(new Point(COORD3D Point, Color.BLACK));

// add target point for the linestrip

ls.add(new Point(COORD3D Point, Color.BLACK));

// display flag for linestrip

ls.setDisplayed(true);

// add linestrip ls to a list of linestrips

this.lineStrips.add(ls);

After doing that for every two points you want connect by a linestrip, you can use an iterator to add them to your scatter diagram.

Iterator<LineStrip> lsIterator = this.lineStrips.iterator();
        while (lsIterator.hasNext()) {
            chart.getScene().getGraph().add(lsIterator.next());
        }

        ChartLauncher.openChart(chart, NAME);

Regards,

Andreas

2013/10/17 <kx1...@gmail.com>

[kx1...@gmail.com]

Hey Andreas,

Thanks so much!
I've done.;)

Best,
Nina

[Anas Ayad]

It worked for me too, I just wanted to say thanks for sharing.

Have a good day.