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how can i draw a ellipse,or a orbit like a irregular circle
Posted: Fri Oct 28, 2011 3:07 am
by 15360306
which style i can use ? Line, polar ?
it is very urgent!
thanks if someone can help!
Re: how can i draw a ellipse,or a orbit like a irregular circle
Posted: Fri Oct 28, 2011 3:23 am
by 15360306
when i draw a circle by these code:
Line line3 = new Line( myChart2.getChart() );
for(i=0;i<1024;i++)
{
dx = 2* Math.cos( omega*dt*i + Math.PI/2 );
dy = 2* Math.cos( omega*dt*i ) ;// + 4* Math.cos(2*omega*dt*i);
line3.add( dx,dy );
}
i get the result:
- is_not_a _circle
- circle.JPG (27.16 KiB) Viewed 8606 times
Re: how can i draw a ellipse,or a orbit like a irregular circle
Posted: Fri Oct 28, 2011 7:08 am
by narcis
Hi lwperic,
Line series was designed to plot sequential data and hence X values are sorted ascendingly. To get a circle from this data set you should set X values not being sorted before populating series:
Code: Select all
line3.getXValues().setOrder(ValueListOrder.NONE);
Re: how can i draw a ellipse,or a orbit like a irregular circle
Posted: Fri Oct 28, 2011 7:31 am
by 15360306
thank u very much!