Mdthbs

I want to recreate the following table on latex

Here is my MWE

documentclass{article} 

usepackage{colortbl}



begin{document}

begin{table}[h]

 begin{tabular}{|>{columncolor[gray]{.8}}c|m{1cm}|m{1cm}|m{1cm}|m{1cm}|m{1cm}|m{1cm}|m{1cm}|}

   hline

  footnotesize{ $x$ } & 0.900 & 0.990 & 0.999 & 1.000 & 1.001 & 1.010 & 1.100 \ hline

  footnotesize{ $f(x)$} & 1.810 & 1.980 & 1.998 & 2.000 & 2.002 & 2.020 & 2.210 \ hline

 end{tabular}

 end{table}

end{document} 

You can draw with TikZ.

documentclass[tikz,border=5mm]{standalone}

% put a row of 8 elements

newcommand{putrow}[9]{

path (0,#1) node{#2}

++(0:1) node{#3} ++(0:1) node{#4}

++(0:1) node{#5} ++(0:1) node{#6} 

++(0:1) node{#7} ++(0:1) node{#8} ++(0:1) node{#9};

}



begin{document}

begin{tikzpicture}[xscale=1.4,yscale=.6]

begin{scope}[shift={(-.5,.5)}]

fill[cyan!30] (0,0) rectangle +(1,-2);

draw (0,0) grid (8,-2);

end{scope}

begin{scope}[-stealth,magenta,shorten >=.5pt,

every node/.style={midway,scale=.8}]

draw[shift={(90:1)}] (1,0)--(4,0)    node[above]{$x$ approaches $1$};

draw[shift={(90:1)}] (7,0)--(4,0)    node[above]{$x$ approaches $1$};

draw[shift={(-90:2)}] (1,0)--(4,0)   node[below]{$f(x)$ approaches $2$};

draw[shift={(-90:2)}] (7,0)--(4,0)   node[below]{$f(x)$ approaches $2$};

end{scope}



putrow{0}{$x$}{0.900}{0.990}{0.999}{1.000}{1.001}{1.010}{1.100}

putrow{-1}{$f(x)$}{1.810}{1.980}{1.998}{2.000}{2.002}{2.020}{2.210}

end{tikzpicture}

end{document}

Also with tikz, but now with use of the matrix library. For arrows, edge labels are employed arrows.meta and quoted libraries:

documentclass[tikz,border=5mm]{standalone}

usetikzlibrary{arrows.meta,

                matrix,

                quotes

                }



begin{document}

    begin{tikzpicture}[

every edge/.style = {draw, purple, -{Straight Barb[angle=60:2pt 3]}, semithick}, shorten >=1pt,

every edge quoetes/.style = {font=footnotesize}

                        ]

matrix (m) [matrix of math nodes,

             nodes = {draw, minimum height=4ex, minimum width=3.3em, 

                      inner sep=0pt, outer sep=0pt, anchor=center},

             column sep=-pgflinewidth,

             row sep=-pgflinewidth,

             column 1/.append style = {nodes={fill=cyan!30}}

            ]

{

 x   & 0.900 & 0.990 & 0.999 & 1.000 & 1.001 & 1.010 & 1.100    \ 

f(x) & 1.810 & 1.980 & 1.998 & 2.000 & 2.002 & 2.020 & 2.210    \

};

draw   (m-1-2.north |- m.north) edge["$x$ approaches $1$"] (m-1-5.north |- m.north)

        (m-1-8.north |- m.north) edge["$f(x)$ approaches $1$" '] (m-1-5.north |- m.north)

        (m-1-2.south |- m.south) edge["$x$ approaches $2$" '] (m-1-5.north |- m.south)

        (m-1-8.south |- m.south) edge["$f(x)$ approaches $2$"] (m-1-5.north |- m.south);

    end{tikzpicture}

end{document}

I wrote two macros that automatically place the text above or below depending on whether the path goes from left to right or not. valeur and fromto

Code and result (to be compile twice):

documentclass{article} 

usepackage{colortbl}

usepackage{tikz}

definecolor{myviolet}{RGB}{243,29,143}

usetikzlibrary{calc,arrows.meta}



newcommand{valeur}[2]{

    tikz[remember picture] node[inner sep=0pt,anchor=center](#1){#2};}

newcommand{fromto}[4][]{

tikz[remember picture,overlay,auto=left,>={Stealth[length=5pt, inset=1pt,sep]}]

    path[draw=myviolet,thick,#1]

    ($(#2.center)!5mm!90:(#3.center)$)--($(#3.center)!5mm!-90:(#2.center)$)node[midway,myviolet,font=bf]{#4};}



begin{document}

begin{table}[h]

 begin{tabular}{|>{columncolor[gray]{.8}}c|m{1cm}|m{1cm}|m{1cm}|m{1cm}|m{1cm}|m{1cm}|m{1cm}|}

   hline

  footnotesize{ $x$ } & valeur{a1}{0.900} & 0.990 & 0.999 & valeur{b1}{1.000} & 1.001 & 1.010 & valeur{c1}{1.100} \ hline

  footnotesize{ $f(x)$} & valeur{a2}{1.810} & 1.980 & 1.998 & valeur{b2}{2.000} & 2.002 & 2.020 & valeur{c2}{2.210} \ hline

 end{tabular}

 end{table}



fromto[->] {a1}{b1}{$x$ approaches 1.}

fromto[<-] {b1}{c1}{$x$ approaches 1.}

fromto[<-] {b2}{a2}{$f(x)$ approaches 2.}

fromto[->] {c2}{b2}{$f(x)$ approaches 2.}



end{document}

The two macros:

1. 
   

   The first called valeur place is a TikZ node centered on the number from which you want to start or arrive the arrow;

   
   
   

   newcommand{valeur}[2]{
   
       tikz[remember picture] node[inner sep=0pt,anchor=center](#1){#2};}

   
   
   

   It has two arguments:

   
   
   
   
   
   • the first #1 is the name we give to the node
   
   
   • the second #2 is the value of this node.
   
   
   
   


2. 
   

   the second one called fromto draw a line and automatically places the text above or below the line (it could be an arrow).

   
   
   

   The principle is the following if the path goes from left to right, the text is placed above the path, otherwise it is placed below.

   
   
   
   
   

   newcommand{fromto}[4][]{
   
   tikz[remember picture,overlay,auto=left,>={Stealth[length=5pt, inset=1pt,sep]}]
   
       path[draw=myviolet,thick,#1]
   
       ($(#2.center)!5mm!90:(#3.center)$)--($(#3.center)!5mm!-90:(#2.center)$)node[midway,myviolet,font=bf]{#4};}

   
   This macro has 4 arguments:
   
   
   
   
   • the first one #1 is optional and allows to transmit options to the path
     
   
   
   • the second #2 is the starting point
     
   
   
   • the third #3 is the arrival point
     
   
   
   • the fourth #4 is the text to be positioned
     
   
   
   
   

For example these code produce:

documentclass{article} 

usepackage{tikz}

usetikzlibrary{calc,arrows.meta}



newcommand{valeur}[2]{

    tikz[remember picture] node[inner sep=0pt,anchor=center](#1){#2};}

newcommand{fromto}[4][]{

tikz[remember picture,overlay,auto=left,>={Stealth[length=5pt, inset=1pt,sep]}]

    path[draw=black,thick,#1]($(#2.center)!5mm!90:(#3.center)$)--($(#3.center)!5mm!-90:(#2.center)$)node[midway,blue,font=bf]{#4};}



begin{document}



 begin{tikzpicture}[remember picture]

 node[draw,circle] (A)at(0,0){A};

 node[draw,circle] (B) at (7,0){B};

 end{tikzpicture}



fromto[] {A}{B}{from A to B: text is above}

fromto[] {B}{A}{from B to A: text is below}



end{document}

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