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Relationship between strut and baselineskip


strut and strutboxHow to modify columns/column environments so they resize automatically to the largest column ?Set strut heightDefinition of strut explainedStrutting around: What's the difference between strut, mathstrut and vphantom?Ensuring a paragraph uses at least a given height?Why is `strut` working in these scenarios?Variable-width horizontal rules with cline intrude cell textFirst word hyphenation in parbox with strutbaselineskip param of fontsize doesn't add space between my lines













3















Here, it is said that a strut is defined as:



rule[-.3baselineskip]{0pt}{baselineskip}


However, if I do:



newlength{strutheight}

settoheight{strutheight}{strut}printlength{strutheight}

printlength{baselineskip}


It prints: 



8.39996pt 12.0pt


8.39996 is equal to 0.7*12. However, what I don't understand is that according to its definition the height of the strut should be baselineskip, because -.3baselineskip only refers to a vertical alignment offset. Why does settoheight on a strut produces this behaviour?






vertical-alignment baseline calc strut







share|improve this question



























    3















    Here, it is said that a strut is defined as:



    rule[-.3baselineskip]{0pt}{baselineskip}


    However, if I do:



    newlength{strutheight}
    
settoheight{strutheight}{strut}printlength{strutheight}
    
printlength{baselineskip}


    It prints: 



    8.39996pt 12.0pt


    8.39996 is equal to 0.7*12. However, what I don't understand is that according to its definition the height of the strut should be baselineskip, because -.3baselineskip only refers to a vertical alignment offset. Why does settoheight on a strut produces this behaviour?






    vertical-alignment baseline calc strut







    share|improve this question

























      3












      3








      3








      Here, it is said that a strut is defined as:



      rule[-.3baselineskip]{0pt}{baselineskip}


      However, if I do:



      newlength{strutheight}
      
settoheight{strutheight}{strut}printlength{strutheight}
      
printlength{baselineskip}


      It prints: 



      8.39996pt 12.0pt


      8.39996 is equal to 0.7*12. However, what I don't understand is that according to its definition the height of the strut should be baselineskip, because -.3baselineskip only refers to a vertical alignment offset. Why does settoheight on a strut produces this behaviour?






      vertical-alignment baseline calc strut







      share|improve this question














      Here, it is said that a strut is defined as:



      rule[-.3baselineskip]{0pt}{baselineskip}


      However, if I do:



      newlength{strutheight}
      
settoheight{strutheight}{strut}printlength{strutheight}
      
printlength{baselineskip}


      It prints: 



      8.39996pt 12.0pt


      8.39996 is equal to 0.7*12. However, what I don't understand is that according to its definition the height of the strut should be baselineskip, because -.3baselineskip only refers to a vertical alignment offset. Why does settoheight on a strut produces this behaviour?






      vertical-alignment baseline calc strut




      vertical-alignment baseline calc strut






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 2 hours ago









      VincentVincent

      1,70421939




      1,70421939






















          2 Answers
          2






          active

          oldest

          votes


















          5














          The height of the whole strut is baselineskip, however it is lowered by 0.3baselineskip form the baseline. Its depth plus its height totals baselineskip:



          documentclass{article}
          
begin{document}
          
newlength{strutheight}
          
newlength{strutdepth}
          
settoheight{strutheight}{strut}
          
settodepth{strutdepth}{strut}
          
$thestrutheight+thestrutdepth=thebaselineskip$
          
end{document}


          this prints 8.39996pt + 3.60004pt = 12.0pt.



          In TeX, the “height” of a box is not its total height, but the height above the baseline, and the “depth” is the amount that box goes below that baseline. And when you do settoheight you get only the height of the box, not the total height.



          You can draw the strut and its height and depth to see:




          enter image description here




          documentclass{article}
          
begin{document}
          
fboxsep0pt
          
fboxrule0.1pt
          

          
fbox{strut}
          
fbox{rule{0pt}{0.7baselineskip}}
          
fbox{rule[-0.3baselineskip]{0pt}{0.3baselineskip}}
          
end{document}





          share|improve this answer































            1














            Well, the definition of strut is



            % latex.ltx, line 594:
            
defstrut{relaxifmmodecopystrutboxelseunhcopystrutboxfi}


            The code rule[-0.3baselineskip]{0pt}{baselineskip} is a less efficient way to say unhcopystrutbox, but amounts to essentially the same. Part of the strut is below the baseline, to cope with characters with descenders like p or y.



            The strutbox is updated whenever a fontsize command is processed:



            % latex.ltx, line 2808:
            
defset@fontsize#1#2#3{%
            
    @defaultunits@tempdimb#2ptrelax@nnil
            
    edeff@size{strip@pt@tempdimb}%
            
    @defaultunits@tempskipa#3ptrelax@nnil
            
    edeff@baselineskip{the@tempskipa}%
            
    edeff@linespread{#1}%
            
    letbaselinestretchf@linespread
            
      defsize@update{%
            
        baselineskipf@baselineskiprelax
            
        baselineskipf@linespreadbaselineskip
            
        normalbaselineskipbaselineskip
            
        setboxstrutboxhbox{%
            
          vrule@height.7baselineskip
            
                @depth.3baselineskip
            
                @widthz@}%
            
        letsize@updaterelax}%
            
  }


            So the strutbox is a box containing a zero width rule, with height 70% of the baseline skip and depth 30% of the baseline skip.



            You can access the current dimensions as htstrutbox and dpstrutbox:



            documentclass{article}
            
begin{document}
            

            
thehtstrutbox (height)
            

            
thedpstrutbox (depth)
            

            
thedimexprhtstrutbox+dpstrutbox (total)
            

            
thebaselineskip (baselineskip)
            

            
end{document}


            enter image description here






            share|improve this answer
























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              2 Answers
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              active

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              5














              The height of the whole strut is baselineskip, however it is lowered by 0.3baselineskip form the baseline. Its depth plus its height totals baselineskip:



              documentclass{article}
              
begin{document}
              
newlength{strutheight}
              
newlength{strutdepth}
              
settoheight{strutheight}{strut}
              
settodepth{strutdepth}{strut}
              
$thestrutheight+thestrutdepth=thebaselineskip$
              
end{document}


              this prints 8.39996pt + 3.60004pt = 12.0pt.



              In TeX, the “height” of a box is not its total height, but the height above the baseline, and the “depth” is the amount that box goes below that baseline. And when you do settoheight you get only the height of the box, not the total height.



              You can draw the strut and its height and depth to see:




              enter image description here




              documentclass{article}
              
begin{document}
              
fboxsep0pt
              
fboxrule0.1pt
              

              
fbox{strut}
              
fbox{rule{0pt}{0.7baselineskip}}
              
fbox{rule[-0.3baselineskip]{0pt}{0.3baselineskip}}
              
end{document}





              share|improve this answer




























                5














                The height of the whole strut is baselineskip, however it is lowered by 0.3baselineskip form the baseline. Its depth plus its height totals baselineskip:



                documentclass{article}
                
begin{document}
                
newlength{strutheight}
                
newlength{strutdepth}
                
settoheight{strutheight}{strut}
                
settodepth{strutdepth}{strut}
                
$thestrutheight+thestrutdepth=thebaselineskip$
                
end{document}


                this prints 8.39996pt + 3.60004pt = 12.0pt.



                In TeX, the “height” of a box is not its total height, but the height above the baseline, and the “depth” is the amount that box goes below that baseline. And when you do settoheight you get only the height of the box, not the total height.



                You can draw the strut and its height and depth to see:




                enter image description here




                documentclass{article}
                
begin{document}
                
fboxsep0pt
                
fboxrule0.1pt
                

                
fbox{strut}
                
fbox{rule{0pt}{0.7baselineskip}}
                
fbox{rule[-0.3baselineskip]{0pt}{0.3baselineskip}}
                
end{document}





                share|improve this answer


























                  5












                  5








                  5







                  The height of the whole strut is baselineskip, however it is lowered by 0.3baselineskip form the baseline. Its depth plus its height totals baselineskip:



                  documentclass{article}
                  
begin{document}
                  
newlength{strutheight}
                  
newlength{strutdepth}
                  
settoheight{strutheight}{strut}
                  
settodepth{strutdepth}{strut}
                  
$thestrutheight+thestrutdepth=thebaselineskip$
                  
end{document}


                  this prints 8.39996pt + 3.60004pt = 12.0pt.



                  In TeX, the “height” of a box is not its total height, but the height above the baseline, and the “depth” is the amount that box goes below that baseline. And when you do settoheight you get only the height of the box, not the total height.



                  You can draw the strut and its height and depth to see:




                  enter image description here




                  documentclass{article}
                  
begin{document}
                  
fboxsep0pt
                  
fboxrule0.1pt
                  

                  
fbox{strut}
                  
fbox{rule{0pt}{0.7baselineskip}}
                  
fbox{rule[-0.3baselineskip]{0pt}{0.3baselineskip}}
                  
end{document}





                  share|improve this answer













                  The height of the whole strut is baselineskip, however it is lowered by 0.3baselineskip form the baseline. Its depth plus its height totals baselineskip:



                  documentclass{article}
                  
begin{document}
                  
newlength{strutheight}
                  
newlength{strutdepth}
                  
settoheight{strutheight}{strut}
                  
settodepth{strutdepth}{strut}
                  
$thestrutheight+thestrutdepth=thebaselineskip$
                  
end{document}


                  this prints 8.39996pt + 3.60004pt = 12.0pt.



                  In TeX, the “height” of a box is not its total height, but the height above the baseline, and the “depth” is the amount that box goes below that baseline. And when you do settoheight you get only the height of the box, not the total height.



                  You can draw the strut and its height and depth to see:




                  enter image description here




                  documentclass{article}
                  
begin{document}
                  
fboxsep0pt
                  
fboxrule0.1pt
                  

                  
fbox{strut}
                  
fbox{rule{0pt}{0.7baselineskip}}
                  
fbox{rule[-0.3baselineskip]{0pt}{0.3baselineskip}}
                  
end{document}






                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered 2 hours ago









                  Phelype OleinikPhelype Oleinik

                  26.2k54791




                  26.2k54791























                      1














                      Well, the definition of strut is



                      % latex.ltx, line 594:
                      
defstrut{relaxifmmodecopystrutboxelseunhcopystrutboxfi}


                      The code rule[-0.3baselineskip]{0pt}{baselineskip} is a less efficient way to say unhcopystrutbox, but amounts to essentially the same. Part of the strut is below the baseline, to cope with characters with descenders like p or y.



                      The strutbox is updated whenever a fontsize command is processed:



                      % latex.ltx, line 2808:
                      
defset@fontsize#1#2#3{%
                      
    @defaultunits@tempdimb#2ptrelax@nnil
                      
    edeff@size{strip@pt@tempdimb}%
                      
    @defaultunits@tempskipa#3ptrelax@nnil
                      
    edeff@baselineskip{the@tempskipa}%
                      
    edeff@linespread{#1}%
                      
    letbaselinestretchf@linespread
                      
      defsize@update{%
                      
        baselineskipf@baselineskiprelax
                      
        baselineskipf@linespreadbaselineskip
                      
        normalbaselineskipbaselineskip
                      
        setboxstrutboxhbox{%
                      
          vrule@height.7baselineskip
                      
                @depth.3baselineskip
                      
                @widthz@}%
                      
        letsize@updaterelax}%
                      
  }


                      So the strutbox is a box containing a zero width rule, with height 70% of the baseline skip and depth 30% of the baseline skip.



                      You can access the current dimensions as htstrutbox and dpstrutbox:



                      documentclass{article}
                      
begin{document}
                      

                      
thehtstrutbox (height)
                      

                      
thedpstrutbox (depth)
                      

                      
thedimexprhtstrutbox+dpstrutbox (total)
                      

                      
thebaselineskip (baselineskip)
                      

                      
end{document}


                      enter image description here






                      share|improve this answer




























                        1














                        Well, the definition of strut is



                        % latex.ltx, line 594:
                        
defstrut{relaxifmmodecopystrutboxelseunhcopystrutboxfi}


                        The code rule[-0.3baselineskip]{0pt}{baselineskip} is a less efficient way to say unhcopystrutbox, but amounts to essentially the same. Part of the strut is below the baseline, to cope with characters with descenders like p or y.



                        The strutbox is updated whenever a fontsize command is processed:



                        % latex.ltx, line 2808:
                        
defset@fontsize#1#2#3{%
                        
    @defaultunits@tempdimb#2ptrelax@nnil
                        
    edeff@size{strip@pt@tempdimb}%
                        
    @defaultunits@tempskipa#3ptrelax@nnil
                        
    edeff@baselineskip{the@tempskipa}%
                        
    edeff@linespread{#1}%
                        
    letbaselinestretchf@linespread
                        
      defsize@update{%
                        
        baselineskipf@baselineskiprelax
                        
        baselineskipf@linespreadbaselineskip
                        
        normalbaselineskipbaselineskip
                        
        setboxstrutboxhbox{%
                        
          vrule@height.7baselineskip
                        
                @depth.3baselineskip
                        
                @widthz@}%
                        
        letsize@updaterelax}%
                        
  }


                        So the strutbox is a box containing a zero width rule, with height 70% of the baseline skip and depth 30% of the baseline skip.



                        You can access the current dimensions as htstrutbox and dpstrutbox:



                        documentclass{article}
                        
begin{document}
                        

                        
thehtstrutbox (height)
                        

                        
thedpstrutbox (depth)
                        

                        
thedimexprhtstrutbox+dpstrutbox (total)
                        

                        
thebaselineskip (baselineskip)
                        

                        
end{document}


                        enter image description here






                        share|improve this answer


























                          1












                          1








                          1







                          Well, the definition of strut is



                          % latex.ltx, line 594:
                          
defstrut{relaxifmmodecopystrutboxelseunhcopystrutboxfi}


                          The code rule[-0.3baselineskip]{0pt}{baselineskip} is a less efficient way to say unhcopystrutbox, but amounts to essentially the same. Part of the strut is below the baseline, to cope with characters with descenders like p or y.



                          The strutbox is updated whenever a fontsize command is processed:



                          % latex.ltx, line 2808:
                          
defset@fontsize#1#2#3{%
                          
    @defaultunits@tempdimb#2ptrelax@nnil
                          
    edeff@size{strip@pt@tempdimb}%
                          
    @defaultunits@tempskipa#3ptrelax@nnil
                          
    edeff@baselineskip{the@tempskipa}%
                          
    edeff@linespread{#1}%
                          
    letbaselinestretchf@linespread
                          
      defsize@update{%
                          
        baselineskipf@baselineskiprelax
                          
        baselineskipf@linespreadbaselineskip
                          
        normalbaselineskipbaselineskip
                          
        setboxstrutboxhbox{%
                          
          vrule@height.7baselineskip
                          
                @depth.3baselineskip
                          
                @widthz@}%
                          
        letsize@updaterelax}%
                          
  }


                          So the strutbox is a box containing a zero width rule, with height 70% of the baseline skip and depth 30% of the baseline skip.



                          You can access the current dimensions as htstrutbox and dpstrutbox:



                          documentclass{article}
                          
begin{document}
                          

                          
thehtstrutbox (height)
                          

                          
thedpstrutbox (depth)
                          

                          
thedimexprhtstrutbox+dpstrutbox (total)
                          

                          
thebaselineskip (baselineskip)
                          

                          
end{document}


                          enter image description here






                          share|improve this answer













                          Well, the definition of strut is



                          % latex.ltx, line 594:
                          
defstrut{relaxifmmodecopystrutboxelseunhcopystrutboxfi}


                          The code rule[-0.3baselineskip]{0pt}{baselineskip} is a less efficient way to say unhcopystrutbox, but amounts to essentially the same. Part of the strut is below the baseline, to cope with characters with descenders like p or y.



                          The strutbox is updated whenever a fontsize command is processed:



                          % latex.ltx, line 2808:
                          
defset@fontsize#1#2#3{%
                          
    @defaultunits@tempdimb#2ptrelax@nnil
                          
    edeff@size{strip@pt@tempdimb}%
                          
    @defaultunits@tempskipa#3ptrelax@nnil
                          
    edeff@baselineskip{the@tempskipa}%
                          
    edeff@linespread{#1}%
                          
    letbaselinestretchf@linespread
                          
      defsize@update{%
                          
        baselineskipf@baselineskiprelax
                          
        baselineskipf@linespreadbaselineskip
                          
        normalbaselineskipbaselineskip
                          
        setboxstrutboxhbox{%
                          
          vrule@height.7baselineskip
                          
                @depth.3baselineskip
                          
                @widthz@}%
                          
        letsize@updaterelax}%
                          
  }


                          So the strutbox is a box containing a zero width rule, with height 70% of the baseline skip and depth 30% of the baseline skip.



                          You can access the current dimensions as htstrutbox and dpstrutbox:



                          documentclass{article}
                          
begin{document}
                          

                          
thehtstrutbox (height)
                          

                          
thedpstrutbox (depth)
                          

                          
thedimexprhtstrutbox+dpstrutbox (total)
                          

                          
thebaselineskip (baselineskip)
                          

                          
end{document}


                          enter image description here







                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered 1 hour ago









                          egregegreg

                          737k8919373265




                          737k8919373265






























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                              Meter-Bus Содержание Параметры шины | Стандартизация |...

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                              RS-232IrDAHARTмодемтоковая петляИРПСMIDIIO-LinkRS-422RS-423RS-485LINM-BusKansas City StandardКомпакт-кассетагрампластинкаPPPSLIPIrDAHARTISO 7816MIDIIO-LinkModbusLINDMX-512P-NETProfibusIEC 608708250 UART16550 UART Сетевые протоколыПоследовательные шины физического уровняполевой шиныасинхронного интерфейсаOpen Metering SystemAESздесь У этого термина существуют и другие значения, см. M-bus (значения). M-Bus (Meter-Bus) — стандарт физического уровня для полевой шины на основе асинхронного интерфейса. Также под этим названием понимают коммуникационный протокол, используемый для связи устройств по этой шине. M-bus преимущественно применяется для приборов учета электрической энергии (электросчётчики), тепловой энергии (теплосчётчики), расходомеров воды и газа. Данные передаются на компьютерную станцию (сервер) напрямую или через концентраторы шины M-Bus, а также усилители-повторители сигнала. Содержание 1 Параметры шины 2 Стандартизация 2.1 Open Metering System ...
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