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How to get regions to plot as graphics

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3

$begingroup$

I want to put an anulus in my graphics object. How can I format a region difference into a graphics primitive?

a=1;b=5;
Region[RegionDifference[Disk[0,0,b],Disk[0,0,a]]] (*works*)
Graphics[Rectangle[5,5], Blue,Rectangle[-5,-5],RegionDifference[Disk[0,0,b],Disk[0,0,a]]](*doesn't work*)
Head[RegionDifference[Disk[0,0,b],Disk[0,0,a]]] (* wrong object type *)
Head[Disk[]]

graphics regions

share|improve this question

asked Mar 29 at 0:11

Ion SmeIon Sme

877

$endgroup$

• 
  
  
  

  
  4
  

  
  
  
  
  
  

  
  $begingroup$
  Why not use Annulus?
  $endgroup$
  – Carl Woll
  Mar 29 at 0:19
  

  
  
  
  

add a comment | 

3

$begingroup$

I want to put an anulus in my graphics object. How can I format a region difference into a graphics primitive?

a=1;b=5;
Region[RegionDifference[Disk[0,0,b],Disk[0,0,a]]] (*works*)
Graphics[Rectangle[5,5], Blue,Rectangle[-5,-5],RegionDifference[Disk[0,0,b],Disk[0,0,a]]](*doesn't work*)
Head[RegionDifference[Disk[0,0,b],Disk[0,0,a]]] (* wrong object type *)
Head[Disk[]]

graphics regions

share|improve this question

asked Mar 29 at 0:11

Ion SmeIon Sme

877

$endgroup$

• 
  
  
  

  
  4
  

  
  
  
  
  
  

  
  $begingroup$
  Why not use Annulus?
  $endgroup$
  – Carl Woll
  Mar 29 at 0:19
  

  
  
  
  

add a comment | 

$begingroup$

I want to put an anulus in my graphics object. How can I format a region difference into a graphics primitive?

a=1;b=5;
Region[RegionDifference[Disk[0,0,b],Disk[0,0,a]]] (*works*)
Graphics[Rectangle[5,5], Blue,Rectangle[-5,-5],RegionDifference[Disk[0,0,b],Disk[0,0,a]]](*doesn't work*)
Head[RegionDifference[Disk[0,0,b],Disk[0,0,a]]] (* wrong object type *)
Head[Disk[]]

graphics regions

share|improve this question

asked Mar 29 at 0:11

Ion SmeIon Sme

877

$endgroup$

a=1;b=5;
Region[RegionDifference[Disk[0,0,b],Disk[0,0,a]]] (*works*)
Graphics[Rectangle[5,5], Blue,Rectangle[-5,-5],RegionDifference[Disk[0,0,b],Disk[0,0,a]]](*doesn't work*)
Head[RegionDifference[Disk[0,0,b],Disk[0,0,a]]] (* wrong object type *)
Head[Disk[]]

share|improve this question

asked Mar 29 at 0:11

Ion SmeIon Sme

877

share|improve this question

asked Mar 29 at 0:11

Ion SmeIon Sme

877

asked Mar 29 at 0:11

Ion SmeIon Sme

877

asked Mar 29 at 0:11

Ion SmeIon Sme

877

3 Answers
3

active

oldest

votes

3

$begingroup$

Graphics[Rectangle[5, 5], Blue, Rectangle[-5, -5], 
 First @ RegionPlot @ RegionDifference[Disk[0, 0, b], Disk[0, 0, a]]]

share|improve this answer

answered Mar 29 at 0:16

kglrkglr

190k10206425

$endgroup$

add a comment | 

4

$begingroup$

a = 1; b = 5;
Show[Graphics[Blue, Rectangle[4, 4], Red, Rectangle[-5, -5]], 
Region[RegionDifference[Disk[0, 0, b], Disk[0, 0, a]]]]

share|improve this answer

answered Mar 29 at 0:45

mjwmjw

1,26810

$endgroup$

add a comment | 

2

$begingroup$

Graphics[Annulus[0, 0, .5, 1]]

(* Oh... just saw @Carl Woll's equivalent solution *)

share|improve this answer

answered Mar 29 at 0:23

David G. StorkDavid G. Stork

24.9k22155

$endgroup$

add a comment | 

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3

$begingroup$

Graphics[Rectangle[5, 5], Blue, Rectangle[-5, -5], 
 First @ RegionPlot @ RegionDifference[Disk[0, 0, b], Disk[0, 0, a]]]

share|improve this answer

answered Mar 29 at 0:16

kglrkglr

190k10206425

$endgroup$

add a comment | 

3

$begingroup$

Graphics[Rectangle[5, 5], Blue, Rectangle[-5, -5], 
 First @ RegionPlot @ RegionDifference[Disk[0, 0, b], Disk[0, 0, a]]]

share|improve this answer

answered Mar 29 at 0:16

kglrkglr

190k10206425

$endgroup$

add a comment | 

$begingroup$

Graphics[Rectangle[5, 5], Blue, Rectangle[-5, -5], 
 First @ RegionPlot @ RegionDifference[Disk[0, 0, b], Disk[0, 0, a]]]

share|improve this answer

answered Mar 29 at 0:16

kglrkglr

190k10206425

$endgroup$

Graphics[Rectangle[5, 5], Blue, Rectangle[-5, -5], 
 First @ RegionPlot @ RegionDifference[Disk[0, 0, b], Disk[0, 0, a]]]

share|improve this answer

answered Mar 29 at 0:16

kglrkglr

190k10206425

answered Mar 29 at 0:16

kglrkglr

190k10206425

answered Mar 29 at 0:16

kglrkglr

190k10206425

4

$begingroup$

a = 1; b = 5;
Show[Graphics[Blue, Rectangle[4, 4], Red, Rectangle[-5, -5]], 
Region[RegionDifference[Disk[0, 0, b], Disk[0, 0, a]]]]

share|improve this answer

answered Mar 29 at 0:45

mjwmjw

1,26810

$endgroup$

add a comment | 

4

$begingroup$

a = 1; b = 5;
Show[Graphics[Blue, Rectangle[4, 4], Red, Rectangle[-5, -5]], 
Region[RegionDifference[Disk[0, 0, b], Disk[0, 0, a]]]]

share|improve this answer

answered Mar 29 at 0:45

mjwmjw

1,26810

$endgroup$

add a comment | 

$begingroup$

a = 1; b = 5;
Show[Graphics[Blue, Rectangle[4, 4], Red, Rectangle[-5, -5]], 
Region[RegionDifference[Disk[0, 0, b], Disk[0, 0, a]]]]

share|improve this answer

answered Mar 29 at 0:45

mjwmjw

1,26810

$endgroup$

a = 1; b = 5;
Show[Graphics[Blue, Rectangle[4, 4], Red, Rectangle[-5, -5]], 
Region[RegionDifference[Disk[0, 0, b], Disk[0, 0, a]]]]

share|improve this answer

answered Mar 29 at 0:45

mjwmjw

1,26810

answered Mar 29 at 0:45

mjwmjw

1,26810

answered Mar 29 at 0:45

mjwmjw

1,26810

2

$begingroup$

Graphics[Annulus[0, 0, .5, 1]]

(* Oh... just saw @Carl Woll's equivalent solution *)

share|improve this answer

answered Mar 29 at 0:23

David G. StorkDavid G. Stork

24.9k22155

$endgroup$

add a comment | 

2

$begingroup$

Graphics[Annulus[0, 0, .5, 1]]

(* Oh... just saw @Carl Woll's equivalent solution *)

share|improve this answer

answered Mar 29 at 0:23

David G. StorkDavid G. Stork

24.9k22155

$endgroup$

add a comment | 

$begingroup$

Graphics[Annulus[0, 0, .5, 1]]

(* Oh... just saw @Carl Woll's equivalent solution *)

share|improve this answer

answered Mar 29 at 0:23

David G. StorkDavid G. Stork

24.9k22155

$endgroup$

Graphics[Annulus[0, 0, .5, 1]]

share|improve this answer

answered Mar 29 at 0:23

David G. StorkDavid G. Stork

24.9k22155

answered Mar 29 at 0:23

David G. StorkDavid G. Stork

24.9k22155

answered Mar 29 at 0:23

David G. StorkDavid G. Stork

24.9k22155