
CIRCLEName:
Coordinates for the circle can be specified in the following ways:
where <x1> is a number or parameter in the decimal range 0 to 100 that specifies the x coordinate for one end of the diameter of the circle; <y1> is a number or parameter in the decimal range 0 to 100 that specifies the y coordinate for one end of the diameter of the circle; <x2> is a number or parameter in the decimal range 0 to 100 that specifies the x coordinate for the other end of the diameter of the circle; This syntax is used for absolute screen units.
where <x1> is a number or parameter that specifies the x coordinate for one end of the diameter of the circle; <y1> is a number or parameter that specifies the y coordinate for one end of the diameter of the circle; <x2> is a number or parameter that specifies the x coordinate for the other end of the diameter of the circle; and <y2> is a number or parameter that specifies the y coordinate for the other end of the diameter of the circle. This syntax is used for absolute data units.
where <x1> is a number or parameter that specifies the x coordinate for one end of the diameter of the circle; <y1> is a number or parameter that specifies the y coordinate for one end of the diameter of the circle; <x2> is a number or parameter that specifies the x coordinate for the other end of the diameter of the circle; and <y2> is a number or parameter that specifies the y coordinate for the other end of the diameter of the circle. This syntax is used for relative screen units.
where <x1> is a number or parameter that specifies the x coordinate for one end of the diameter of the circle; <y1> is a number or parameter that specifies the y coordinate for one end of the diameter of the circle; <x2> is a number or parameter that specifies the x coordinate for the other end of the diameter of the circle; and <y2> is a number or parameter that specifies the y coordinate for the other end of the diameter of the circle. This syntax is used for relative data units.
CIRCLE 50 50 60 50 CIRCLE 20 20 30 30 CIRCLE 50 50 10 10 CIRCLE RELATIVE 50 50 10 10 CIRCLE DATA 250 125 345 420
You can turn off this correction with the command
To turn the correction back on, enter
1997/07: Added support for data units 2014/08: Added support for SET CIRCLE CORRECTION command ERASE CIRCLE 10 10 20 20 CIRCLE 60 10 80 30 . THICKNESS 0.7 CIRCLE 10 30 20 40 THICKNESS 0.2 . LINE DASH CIRCLE 10 50 20 60 LINE SOLID . LINE COLOR G50 CIRCLE 10 80 20 90 LINE COLOR BLACK . REGION FILL ON CIRCLE 30 30 35 35 REGION FILL COLOR G50 CIRCLE 40 40 60 60 . FILL ON FONT SIMPLEX MOVE 40 80 TEXT CIRC() DRAW A CIRCLE WITH THE TEXT COMMANDProgram 2: . . Step 1: Read the data . skip 25 read circle.dat x1 y1 x2 y2 x3 y3 x4 y4 skip 0 . let x1=x1/1000 let y1=y1/1000 let x2=x2/1000 let y2=y2/1000 let x3=x3/1000 let y3=y3/1000 let x4=x4/1000 let y4=y4/1000 . . Step 2: Plot points . xgrid ygrid title Overlapping Plot Circles x1Label X y1Label Y xlimits 322 335 ylimits 6389 6404 . characters . . * * character color black black red blue lines blank blank blank presort off . retain x3 y3 subset x3 > 100 subset y3 > 100 retain x4 y4 subset x4 > 100 subset y4 > 100 . plot y1 x1 and plot y2 x2 and plot y3 x3 and plot y4 x4 . . Step 3: Draw circles on plot, note the elliptical . shape of the circles . set circle correction off thickness 0.1 character blank line solid . . Center_1 327.4122 6397.1038 . line color red circle data 322.4122 6397.1038 332.4122 6397.1038 . . Center_2 328.4241 6395.2006 line color blue circle data 323.4241 6395.2006 333.421 6395.2006  
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Date created: 01/31/2015 