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12

I was trying to replicate the figure in Box half filled color using TikZ.

I draw a rectangle from (0,0) to (4,3).

I locate two points (0,1) as A and (4,2) as B.

When I connect the points A and B, I was expecting that the line will touch the rectangle. But there is a gap when the two points are connected.

I wish to understand this behavior.

Code:

documentclassarticle
usepackagetikz
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node (A) at (0,1) ;
 node (B) at (4,2) ;

 draw (A) -- (B);

endtikzpicture
enddocument 

tikz-pgf

share|improve this question

asked Mar 19 at 13:18

subham sonisubham soni

4,87183187

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Vaguely related: tex.stackexchange.com/q/81848/86
  
  – Loop Space
  Mar 19 at 21:14
  

  
  
  
  

add a comment | 

12

I was trying to replicate the figure in Box half filled color using TikZ.

I draw a rectangle from (0,0) to (4,3).

I locate two points (0,1) as A and (4,2) as B.

When I connect the points A and B, I was expecting that the line will touch the rectangle. But there is a gap when the two points are connected.

I wish to understand this behavior.

Code:

documentclassarticle
usepackagetikz
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node (A) at (0,1) ;
 node (B) at (4,2) ;

 draw (A) -- (B);

endtikzpicture
enddocument 

tikz-pgf

share|improve this question

asked Mar 19 at 13:18

subham sonisubham soni

4,87183187

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Vaguely related: tex.stackexchange.com/q/81848/86
  
  – Loop Space
  Mar 19 at 21:14
  

  
  
  
  

add a comment | 

I was trying to replicate the figure in Box half filled color using TikZ.

I draw a rectangle from (0,0) to (4,3).

I locate two points (0,1) as A and (4,2) as B.

When I connect the points A and B, I was expecting that the line will touch the rectangle. But there is a gap when the two points are connected.

I wish to understand this behavior.

Code:

documentclassarticle
usepackagetikz
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node (A) at (0,1) ;
 node (B) at (4,2) ;

 draw (A) -- (B);

endtikzpicture
enddocument 

tikz-pgf

share|improve this question

asked Mar 19 at 13:18

subham sonisubham soni

4,87183187

documentclassarticle
usepackagetikz
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node (A) at (0,1) ;
 node (B) at (4,2) ;

 draw (A) -- (B);

endtikzpicture
enddocument 

share|improve this question

asked Mar 19 at 13:18

subham sonisubham soni

4,87183187

share|improve this question

asked Mar 19 at 13:18

subham sonisubham soni

4,87183187

asked Mar 19 at 13:18

subham sonisubham soni

4,87183187

asked Mar 19 at 13:18

subham sonisubham soni

4,87183187

1 Answer
1

active

oldest

votes

18

It is because your path joins two nodes (A) and (B), not the coordinates themselves. This can be made clearer by adding draw option to the nodes:

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node[draw] (A) at (0,1) ;
 node[draw] (B) at (4,2) ;

 draw (A) -- (B);

endtikzpicture
enddocument 

Let's add some texts to make it even clearer:

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node[draw] (A) at (0,1) A;
 node[draw] (B) at (4,2) B;

 draw (A) -- (B);

endtikzpicture
enddocument 

So how to solve it? Of course, to join the coordinates, there is a standard solution with coordinate:

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 coordinate (A) at (0,1);
 coordinate (B) at (4,2);

 draw (A) -- (B);

endtikzpicture
enddocument 

or you can have the coordinates directly

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 draw (0,1) -- (4,2);

endtikzpicture
enddocument 

If you want to keep the nodes: you should use the coordinate (<node name>.center):

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node (A) at (0,1) ;
 node (B) at (4,2) ;

 draw (A.center) -- (B.center);

endtikzpicture
enddocument 

or set option coordinate for the nodes (suggested by Gregory Puleo):

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node[coordinate] (A) at (0,1) ;
 node[coordinate] (B) at (4,2) ;

 draw (A) -- (B);

endtikzpicture
enddocument

Output of the above four codes:

share|improve this answer

edited Mar 20 at 4:59

answered Mar 19 at 13:28

JouleVJouleV

10.8k22560

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Another option would be node[coordinate] -- which is handy if you want a label at the point.
  
  – Gregory Puleo
  Mar 19 at 21:05
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @GregoryPuleo Great! Thank you very much!
  
  – JouleV
  Mar 20 at 4:57
  

  
  
  
  

add a comment | 

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18

It is because your path joins two nodes (A) and (B), not the coordinates themselves. This can be made clearer by adding draw option to the nodes:

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node[draw] (A) at (0,1) ;
 node[draw] (B) at (4,2) ;

 draw (A) -- (B);

endtikzpicture
enddocument 

Let's add some texts to make it even clearer:

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node[draw] (A) at (0,1) A;
 node[draw] (B) at (4,2) B;

 draw (A) -- (B);

endtikzpicture
enddocument 

So how to solve it? Of course, to join the coordinates, there is a standard solution with coordinate:

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 coordinate (A) at (0,1);
 coordinate (B) at (4,2);

 draw (A) -- (B);

endtikzpicture
enddocument 

or you can have the coordinates directly

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 draw (0,1) -- (4,2);

endtikzpicture
enddocument 

If you want to keep the nodes: you should use the coordinate (<node name>.center):

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node (A) at (0,1) ;
 node (B) at (4,2) ;

 draw (A.center) -- (B.center);

endtikzpicture
enddocument 

or set option coordinate for the nodes (suggested by Gregory Puleo):

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node[coordinate] (A) at (0,1) ;
 node[coordinate] (B) at (4,2) ;

 draw (A) -- (B);

endtikzpicture
enddocument

Output of the above four codes:

share|improve this answer

edited Mar 20 at 4:59

answered Mar 19 at 13:28

JouleVJouleV

10.8k22560

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Another option would be node[coordinate] -- which is handy if you want a label at the point.
  
  – Gregory Puleo
  Mar 19 at 21:05
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @GregoryPuleo Great! Thank you very much!
  
  – JouleV
  Mar 20 at 4:57
  

  
  
  
  

add a comment | 

18

It is because your path joins two nodes (A) and (B), not the coordinates themselves. This can be made clearer by adding draw option to the nodes:

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node[draw] (A) at (0,1) ;
 node[draw] (B) at (4,2) ;

 draw (A) -- (B);

endtikzpicture
enddocument 

Let's add some texts to make it even clearer:

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node[draw] (A) at (0,1) A;
 node[draw] (B) at (4,2) B;

 draw (A) -- (B);

endtikzpicture
enddocument 

So how to solve it? Of course, to join the coordinates, there is a standard solution with coordinate:

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 coordinate (A) at (0,1);
 coordinate (B) at (4,2);

 draw (A) -- (B);

endtikzpicture
enddocument 

or you can have the coordinates directly

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 draw (0,1) -- (4,2);

endtikzpicture
enddocument 

If you want to keep the nodes: you should use the coordinate (<node name>.center):

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node (A) at (0,1) ;
 node (B) at (4,2) ;

 draw (A.center) -- (B.center);

endtikzpicture
enddocument 

or set option coordinate for the nodes (suggested by Gregory Puleo):

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node[coordinate] (A) at (0,1) ;
 node[coordinate] (B) at (4,2) ;

 draw (A) -- (B);

endtikzpicture
enddocument

Output of the above four codes:

share|improve this answer

edited Mar 20 at 4:59

answered Mar 19 at 13:28

JouleVJouleV

10.8k22560

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Another option would be node[coordinate] -- which is handy if you want a label at the point.
  
  – Gregory Puleo
  Mar 19 at 21:05
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @GregoryPuleo Great! Thank you very much!
  
  – JouleV
  Mar 20 at 4:57
  

  
  
  
  

add a comment | 

It is because your path joins two nodes (A) and (B), not the coordinates themselves. This can be made clearer by adding draw option to the nodes:

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node[draw] (A) at (0,1) ;
 node[draw] (B) at (4,2) ;

 draw (A) -- (B);

endtikzpicture
enddocument 

Let's add some texts to make it even clearer:

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node[draw] (A) at (0,1) A;
 node[draw] (B) at (4,2) B;

 draw (A) -- (B);

endtikzpicture
enddocument 

So how to solve it? Of course, to join the coordinates, there is a standard solution with coordinate:

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 coordinate (A) at (0,1);
 coordinate (B) at (4,2);

 draw (A) -- (B);

endtikzpicture
enddocument 

or you can have the coordinates directly

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 draw (0,1) -- (4,2);

endtikzpicture
enddocument 

If you want to keep the nodes: you should use the coordinate (<node name>.center):

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node (A) at (0,1) ;
 node (B) at (4,2) ;

 draw (A.center) -- (B.center);

endtikzpicture
enddocument 

or set option coordinate for the nodes (suggested by Gregory Puleo):

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node[coordinate] (A) at (0,1) ;
 node[coordinate] (B) at (4,2) ;

 draw (A) -- (B);

endtikzpicture
enddocument

Output of the above four codes:

share|improve this answer

edited Mar 20 at 4:59

answered Mar 19 at 13:28

JouleVJouleV

10.8k22560

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node[draw] (A) at (0,1) ;
 node[draw] (B) at (4,2) ;

 draw (A) -- (B);

endtikzpicture
enddocument 

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node[draw] (A) at (0,1) A;
 node[draw] (B) at (4,2) B;

 draw (A) -- (B);

endtikzpicture
enddocument 

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 coordinate (A) at (0,1);
 coordinate (B) at (4,2);

 draw (A) -- (B);

endtikzpicture
enddocument 

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 draw (0,1) -- (4,2);

endtikzpicture
enddocument 

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node (A) at (0,1) ;
 node (B) at (4,2) ;

 draw (A.center) -- (B.center);

endtikzpicture
enddocument 

documentclass[tikz]standalone
begindocument
begintikzpicture
 draw (0,0) rectangle (4,3);

 node[coordinate] (A) at (0,1) ;
 node[coordinate] (B) at (4,2) ;

 draw (A) -- (B);

endtikzpicture
enddocument

share|improve this answer

edited Mar 20 at 4:59

answered Mar 19 at 13:28

JouleVJouleV

10.8k22560

answered Mar 19 at 13:28

JouleVJouleV

10.8k22560

answered Mar 19 at 13:28

JouleVJouleV

10.8k22560