- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Get Direct Link
- Report Inappropriate Content
How to create XY axis data for a circle and key into data table
I would like to draw a circle in graph builder.
I know that one way is using "customize" function in graph build, then use code like below to draw a circle
Pen Color( "orange" );
Pen Size( 2 );
Circle( {0, 0}, 100 );
But I need another way, that is, provide X,Y data in data table, then draw a X-Y map in graph builder
Approximately 50 points data of a circle would be enough for me
So is there any way to quickly generate XY data for a circle?
1 ACCEPTED SOLUTION
Accepted Solutions
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Get Direct Link
- Report Inappropriate Content
Re: How to create XY axis data for a circle and key into data table
Here is one way to generate it
Names Default To Here( 1 );
dt = New Table( "circle", New Column( "x" ), New Column( "y" ) );
radius = 100;
r2 = radius * radius;
For( x = -radius, x <= radius, x++,
y = floor(Sqrt( r2 - x * x ) + 0.5);
dt<<add rows( 1 );
dt:x[N Rows( dt )] = x;
dt:y[N Rows( dt )] = y;
dt<<add rows( 1 );
dt:x[N Rows( dt )] = x;
dt:y[N Rows( dt )] = -1*y;
);
Graph Builder(
Size( 506, 501 ),
Variables( X( :x ), Y( :y ) ),
Elements( Points( X, Y, Legend( 3 ) ) )
);
Jim
1 REPLY 1
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Get Direct Link
- Report Inappropriate Content
Re: How to create XY axis data for a circle and key into data table
Here is one way to generate it
Names Default To Here( 1 );
dt = New Table( "circle", New Column( "x" ), New Column( "y" ) );
radius = 100;
r2 = radius * radius;
For( x = -radius, x <= radius, x++,
y = floor(Sqrt( r2 - x * x ) + 0.5);
dt<<add rows( 1 );
dt:x[N Rows( dt )] = x;
dt:y[N Rows( dt )] = y;
dt<<add rows( 1 );
dt:x[N Rows( dt )] = x;
dt:y[N Rows( dt )] = -1*y;
);
Graph Builder(
Size( 506, 501 ),
Variables( X( :x ), Y( :y ) ),
Elements( Points( X, Y, Legend( 3 ) ) )
);
Jim