Difference between -| and |- in TikZ












12















Based on this tutorial, I understand symbols -| and |- are used to draw perpendicular lines.



But I wish to understand the difference between the two.



There are the following related questions:




  1. Insertion of perpendicular symbol at intersection of two perpendicular lines

  2. How to add perpendicular symbol at desired location

  3. How to Mark Right Angle in Tikz


But none of them seem to use the approach of -| and |-.






tikz-pgf







share|improve this question


















  • 1





    tex.stackexchange.com/a/401429/121799

    – marmot
    Mar 24 at 12:33
















12















Based on this tutorial, I understand symbols -| and |- are used to draw perpendicular lines.



But I wish to understand the difference between the two.



There are the following related questions:




  1. Insertion of perpendicular symbol at intersection of two perpendicular lines

  2. How to add perpendicular symbol at desired location

  3. How to Mark Right Angle in Tikz


But none of them seem to use the approach of -| and |-.






tikz-pgf







share|improve this question


















  • 1





    tex.stackexchange.com/a/401429/121799

    – marmot
    Mar 24 at 12:33














12












12








12


0






Based on this tutorial, I understand symbols -| and |- are used to draw perpendicular lines.



But I wish to understand the difference between the two.



There are the following related questions:




  1. Insertion of perpendicular symbol at intersection of two perpendicular lines

  2. How to add perpendicular symbol at desired location

  3. How to Mark Right Angle in Tikz


But none of them seem to use the approach of -| and |-.






tikz-pgf







share|improve this question














Based on this tutorial, I understand symbols -| and |- are used to draw perpendicular lines.



But I wish to understand the difference between the two.



There are the following related questions:




  1. Insertion of perpendicular symbol at intersection of two perpendicular lines

  2. How to add perpendicular symbol at desired location

  3. How to Mark Right Angle in Tikz


But none of them seem to use the approach of -| and |-.






tikz-pgf




tikz-pgf






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 24 at 12:16









subham sonisubham soni

4,69483185




4,69483185








  • 1





    tex.stackexchange.com/a/401429/121799

    – marmot
    Mar 24 at 12:33














  • 1





    tex.stackexchange.com/a/401429/121799

    – marmot
    Mar 24 at 12:33








1




1





tex.stackexchange.com/a/401429/121799

– marmot
Mar 24 at 12:33





tex.stackexchange.com/a/401429/121799

– marmot
Mar 24 at 12:33










3 Answers
3






active

oldest

votes


















21














Understand it as it looks like:





  • -| is "horizontal line → vertical line":



    documentclass[tikz]{standalone}
    
begin{document}
    
begin{tikzpicture}
    
draw (0,0) coordinate (1) node[below] {$(0,0)$};
    
draw (2,2) coordinate (2) node[above] {$(2,2)$};
    
draw (1) -| (2);
    
% -------------
    
draw (4,2) coordinate (x) node[above] {$(3,2)$};
    
draw (6,0) coordinate (y) node[below] {$(5,0)$};
    
draw (x) -| (y);
    
end{tikzpicture}
    
end{document}


    enter image description here



    Mathematically, (x,y) -| (a,b) and (x,y) -- (a,y) -- (a,b) are the same.




  • |- is "vertical line → horizontal line":



    documentclass[tikz]{standalone}
    
begin{document}
    
begin{tikzpicture}
    
draw (0,0) coordinate (1) node[below] {$(0,0)$};
    
draw (2,2) coordinate (2) node[above] {$(2,2)$};
    
draw (1) |- (2);
    
% -------------
    
draw (4,2) coordinate (x) node[above] {$(3,2)$};
    
draw (6,0) coordinate (y) node[below] {$(5,0)$};
    
draw (x) |- (y);
    
end{tikzpicture}
    
end{document}


    enter image description here



    Mathematically, (x,y) |- (a,b) and (x,y) -- (x,b) -- (a,b) are the same.




They are clearly very different.






share|improve this answer

































    17














    I'd like to add to JouleV's answer another use of -| and |-.



    Given two nodes, A and B:




    • if you use (A |- B) you have a point with the x coordinate of A and the y coordinate of B

    • if you use (A -| B) you have a point with the x coordinate of B and the y coordinate of A.




    documentclass{article}
    
usepackage{amsmath}
    
usepackage{tikz}
    
usetikzlibrary{positioning}
    

    
begin{document}
    
begin{tikzpicture}
    
node[draw] (A) {A};
    
node[draw, above right =4cm of A] (B) {B};
    
node[draw] at (A |- B) {$x$ of A, $y$ of B};
    
node[draw] at (A -| B) {$x$ of B, $y$ of A};
    
end{tikzpicture}
    
end{document}


    enter image description here






    share|improve this answer





















    • 2





      You're welcome! I edited my answer to put x and y within $...$.

      – CarLaTeX
      Mar 25 at 5:56



















    6














    PSTricks version for @CarLaTeX's explanation:





    • (A|-B) (TikZ) = (A|B) (PSTricks)


    • (A-|B) (TikZ) = (B|A) (PSTricks)






    share|improve this answer
























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      3 Answers
      3






      active

      oldest

      votes








      3 Answers
      3






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      21














      Understand it as it looks like:





      • -| is "horizontal line → vertical line":



        documentclass[tikz]{standalone}
        
begin{document}
        
begin{tikzpicture}
        
draw (0,0) coordinate (1) node[below] {$(0,0)$};
        
draw (2,2) coordinate (2) node[above] {$(2,2)$};
        
draw (1) -| (2);
        
% -------------
        
draw (4,2) coordinate (x) node[above] {$(3,2)$};
        
draw (6,0) coordinate (y) node[below] {$(5,0)$};
        
draw (x) -| (y);
        
end{tikzpicture}
        
end{document}


        enter image description here



        Mathematically, (x,y) -| (a,b) and (x,y) -- (a,y) -- (a,b) are the same.




      • |- is "vertical line → horizontal line":



        documentclass[tikz]{standalone}
        
begin{document}
        
begin{tikzpicture}
        
draw (0,0) coordinate (1) node[below] {$(0,0)$};
        
draw (2,2) coordinate (2) node[above] {$(2,2)$};
        
draw (1) |- (2);
        
% -------------
        
draw (4,2) coordinate (x) node[above] {$(3,2)$};
        
draw (6,0) coordinate (y) node[below] {$(5,0)$};
        
draw (x) |- (y);
        
end{tikzpicture}
        
end{document}


        enter image description here



        Mathematically, (x,y) |- (a,b) and (x,y) -- (x,b) -- (a,b) are the same.




      They are clearly very different.






      share|improve this answer






























        21














        Understand it as it looks like:





        • -| is "horizontal line → vertical line":



          documentclass[tikz]{standalone}
          
begin{document}
          
begin{tikzpicture}
          
draw (0,0) coordinate (1) node[below] {$(0,0)$};
          
draw (2,2) coordinate (2) node[above] {$(2,2)$};
          
draw (1) -| (2);
          
% -------------
          
draw (4,2) coordinate (x) node[above] {$(3,2)$};
          
draw (6,0) coordinate (y) node[below] {$(5,0)$};
          
draw (x) -| (y);
          
end{tikzpicture}
          
end{document}


          enter image description here



          Mathematically, (x,y) -| (a,b) and (x,y) -- (a,y) -- (a,b) are the same.




        • |- is "vertical line → horizontal line":



          documentclass[tikz]{standalone}
          
begin{document}
          
begin{tikzpicture}
          
draw (0,0) coordinate (1) node[below] {$(0,0)$};
          
draw (2,2) coordinate (2) node[above] {$(2,2)$};
          
draw (1) |- (2);
          
% -------------
          
draw (4,2) coordinate (x) node[above] {$(3,2)$};
          
draw (6,0) coordinate (y) node[below] {$(5,0)$};
          
draw (x) |- (y);
          
end{tikzpicture}
          
end{document}


          enter image description here



          Mathematically, (x,y) |- (a,b) and (x,y) -- (x,b) -- (a,b) are the same.




        They are clearly very different.






        share|improve this answer




























          21












          21








          21







          Understand it as it looks like:





          • -| is "horizontal line → vertical line":



            documentclass[tikz]{standalone}
            
begin{document}
            
begin{tikzpicture}
            
draw (0,0) coordinate (1) node[below] {$(0,0)$};
            
draw (2,2) coordinate (2) node[above] {$(2,2)$};
            
draw (1) -| (2);
            
% -------------
            
draw (4,2) coordinate (x) node[above] {$(3,2)$};
            
draw (6,0) coordinate (y) node[below] {$(5,0)$};
            
draw (x) -| (y);
            
end{tikzpicture}
            
end{document}


            enter image description here



            Mathematically, (x,y) -| (a,b) and (x,y) -- (a,y) -- (a,b) are the same.




          • |- is "vertical line → horizontal line":



            documentclass[tikz]{standalone}
            
begin{document}
            
begin{tikzpicture}
            
draw (0,0) coordinate (1) node[below] {$(0,0)$};
            
draw (2,2) coordinate (2) node[above] {$(2,2)$};
            
draw (1) |- (2);
            
% -------------
            
draw (4,2) coordinate (x) node[above] {$(3,2)$};
            
draw (6,0) coordinate (y) node[below] {$(5,0)$};
            
draw (x) |- (y);
            
end{tikzpicture}
            
end{document}


            enter image description here



            Mathematically, (x,y) |- (a,b) and (x,y) -- (x,b) -- (a,b) are the same.




          They are clearly very different.






          share|improve this answer















          Understand it as it looks like:





          • -| is "horizontal line → vertical line":



            documentclass[tikz]{standalone}
            
begin{document}
            
begin{tikzpicture}
            
draw (0,0) coordinate (1) node[below] {$(0,0)$};
            
draw (2,2) coordinate (2) node[above] {$(2,2)$};
            
draw (1) -| (2);
            
% -------------
            
draw (4,2) coordinate (x) node[above] {$(3,2)$};
            
draw (6,0) coordinate (y) node[below] {$(5,0)$};
            
draw (x) -| (y);
            
end{tikzpicture}
            
end{document}


            enter image description here



            Mathematically, (x,y) -| (a,b) and (x,y) -- (a,y) -- (a,b) are the same.




          • |- is "vertical line → horizontal line":



            documentclass[tikz]{standalone}
            
begin{document}
            
begin{tikzpicture}
            
draw (0,0) coordinate (1) node[below] {$(0,0)$};
            
draw (2,2) coordinate (2) node[above] {$(2,2)$};
            
draw (1) |- (2);
            
% -------------
            
draw (4,2) coordinate (x) node[above] {$(3,2)$};
            
draw (6,0) coordinate (y) node[below] {$(5,0)$};
            
draw (x) |- (y);
            
end{tikzpicture}
            
end{document}


            enter image description here



            Mathematically, (x,y) |- (a,b) and (x,y) -- (x,b) -- (a,b) are the same.




          They are clearly very different.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Mar 25 at 10:27

























          answered Mar 24 at 13:55









          JouleVJouleV

          8,65222155




          8,65222155























              17














              I'd like to add to JouleV's answer another use of -| and |-.



              Given two nodes, A and B:




              • if you use (A |- B) you have a point with the x coordinate of A and the y coordinate of B

              • if you use (A -| B) you have a point with the x coordinate of B and the y coordinate of A.




              documentclass{article}
              
usepackage{amsmath}
              
usepackage{tikz}
              
usetikzlibrary{positioning}
              

              
begin{document}
              
begin{tikzpicture}
              
node[draw] (A) {A};
              
node[draw, above right =4cm of A] (B) {B};
              
node[draw] at (A |- B) {$x$ of A, $y$ of B};
              
node[draw] at (A -| B) {$x$ of B, $y$ of A};
              
end{tikzpicture}
              
end{document}


              enter image description here






              share|improve this answer





















              • 2





                You're welcome! I edited my answer to put x and y within $...$.

                – CarLaTeX
                Mar 25 at 5:56
















              17














              I'd like to add to JouleV's answer another use of -| and |-.



              Given two nodes, A and B:




              • if you use (A |- B) you have a point with the x coordinate of A and the y coordinate of B

              • if you use (A -| B) you have a point with the x coordinate of B and the y coordinate of A.




              documentclass{article}
              
usepackage{amsmath}
              
usepackage{tikz}
              
usetikzlibrary{positioning}
              

              
begin{document}
              
begin{tikzpicture}
              
node[draw] (A) {A};
              
node[draw, above right =4cm of A] (B) {B};
              
node[draw] at (A |- B) {$x$ of A, $y$ of B};
              
node[draw] at (A -| B) {$x$ of B, $y$ of A};
              
end{tikzpicture}
              
end{document}


              enter image description here






              share|improve this answer





















              • 2





                You're welcome! I edited my answer to put x and y within $...$.

                – CarLaTeX
                Mar 25 at 5:56














              17












              17








              17







              I'd like to add to JouleV's answer another use of -| and |-.



              Given two nodes, A and B:




              • if you use (A |- B) you have a point with the x coordinate of A and the y coordinate of B

              • if you use (A -| B) you have a point with the x coordinate of B and the y coordinate of A.




              documentclass{article}
              
usepackage{amsmath}
              
usepackage{tikz}
              
usetikzlibrary{positioning}
              

              
begin{document}
              
begin{tikzpicture}
              
node[draw] (A) {A};
              
node[draw, above right =4cm of A] (B) {B};
              
node[draw] at (A |- B) {$x$ of A, $y$ of B};
              
node[draw] at (A -| B) {$x$ of B, $y$ of A};
              
end{tikzpicture}
              
end{document}


              enter image description here






              share|improve this answer















              I'd like to add to JouleV's answer another use of -| and |-.



              Given two nodes, A and B:




              • if you use (A |- B) you have a point with the x coordinate of A and the y coordinate of B

              • if you use (A -| B) you have a point with the x coordinate of B and the y coordinate of A.




              documentclass{article}
              
usepackage{amsmath}
              
usepackage{tikz}
              
usetikzlibrary{positioning}
              

              
begin{document}
              
begin{tikzpicture}
              
node[draw] (A) {A};
              
node[draw, above right =4cm of A] (B) {B};
              
node[draw] at (A |- B) {$x$ of A, $y$ of B};
              
node[draw] at (A -| B) {$x$ of B, $y$ of A};
              
end{tikzpicture}
              
end{document}


              enter image description here







              share|improve this answer














              share|improve this answer



              share|improve this answer








              edited Mar 25 at 5:54

























              answered Mar 24 at 18:14









              CarLaTeXCarLaTeX

              34.3k552141




              34.3k552141








              • 2





                You're welcome! I edited my answer to put x and y within $...$.

                – CarLaTeX
                Mar 25 at 5:56














              • 2





                You're welcome! I edited my answer to put x and y within $...$.

                – CarLaTeX
                Mar 25 at 5:56








              2




              2





              You're welcome! I edited my answer to put x and y within $...$.

              – CarLaTeX
              Mar 25 at 5:56





              You're welcome! I edited my answer to put x and y within $...$.

              – CarLaTeX
              Mar 25 at 5:56











              6














              PSTricks version for @CarLaTeX's explanation:





              • (A|-B) (TikZ) = (A|B) (PSTricks)


              • (A-|B) (TikZ) = (B|A) (PSTricks)






              share|improve this answer




























                6














                PSTricks version for @CarLaTeX's explanation:





                • (A|-B) (TikZ) = (A|B) (PSTricks)


                • (A-|B) (TikZ) = (B|A) (PSTricks)






                share|improve this answer


























                  6












                  6








                  6







                  PSTricks version for @CarLaTeX's explanation:





                  • (A|-B) (TikZ) = (A|B) (PSTricks)


                  • (A-|B) (TikZ) = (B|A) (PSTricks)






                  share|improve this answer













                  PSTricks version for @CarLaTeX's explanation:





                  • (A|-B) (TikZ) = (A|B) (PSTricks)


                  • (A-|B) (TikZ) = (B|A) (PSTricks)







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Mar 24 at 18:31









                  The Inventor of GodThe Inventor of God

                  5,02611142




                  5,02611142






























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