TeX - LaTeX Asked on November 1, 2021
documentclass[12pt,a4paper,openany]{book}
usepackage{tikz}
usepackage{pgfplots}
pgfplotsset{compat=1.15}
usepackage{amsmath,amssymb,amsthm}
%%%%%%%%%%%%%%%%%%%
usepgfplotslibrary{fillbetween}
usetikzlibrary{patterns,shapes.geometric}
begin{document}
begin{tikzpicture}[line cap=round,line join=round,x=1cm,y=1cm]
begin{axis}[unbounded coords=jump,
x=1cm,y=1cm,
axis lines=middle,
xmin=-8,
xmax=8,
ymin=-5,
ymax=5,
ytick=empty,
xtick=empty]
addplot[line width=2pt,color=blue,smooth,samples=51,domain=-8:-0.1,name
path=left] {(1/x)} node[pos=0.1,below=40mm]{$(A_3)$}node[pos=0.1,below=20mm,right=40mm]{$(mathcal{C}_1)$};
addplot[line width=2pt,color=blue,smooth,samples=51,domain=0.1:8,name
path=right] {(1/x)} node[pos=0.95,above=20mm]{$(A_1)$}node[pos=0.95,above=20mm,left=50mm]{$(mathcal{C}_1)$};
addplot[line width=2pt,color=red,smooth,samples=51,domain=0.1:8,name
path=right] {-(1/x)} node[pos=0.95,below=40mm]{$(A_4)$}node[pos=0.95,below=20mm,left=50mm]{$(mathcal{C}_2) $};
addplot[line width=2pt,color=red,smooth,samples=51,domain=-8:-0.1,name
path=left] {-(1/x)} node[pos=0.1,above=30mm]{$(A_4)$}node[pos=0.1,above=20mm,right=40mm]{$(mathcal{C}_2) $};
end{axis}
end{tikzpicture}
end{document}
I want to obtain something like this
Compile here: Ahihi do ngoc
import graph;
import patterns;
usepackage("amsmath");
// The default unit and linewidth
unitsize(1cm);
size(8cm,false);
defaultpen(linewidth(1bp));
// Definition of the graphs
real F(real x){return 1/x;}
real G(real x){return -1/x;}
path f1=graph(F,-8,-0.2,350),f2=graph(F,0.2,8,350),
g1=graph(G,-8,-0.2,350),g2=graph(G,0.2,8,350);
// Draw patterns
picture pic1, pic2;
add("hatch1",hatch(NE));
fill(pic1,box((-8,F(-0.2)),(8,F(0.2))),pattern("hatch1"));
clip(pic1,f1--(-8,F(-0.2))--cycle^^f2--(8,F(0.2))--cycle);
add(pic1);
add("hatch2",hatch(SE));
fill(pic2,box((-8,F(-0.2)),(8,F(0.2))),pattern("hatch2"));
clip(pic2,g1--(-8,F(0.2))--cycle^^g2--(8,F(-0.2))--cycle);
add(pic2);
pic2=new picture;
fill(pic2,box((-8,F(-0.2)),(8,F(0.2))),cyan);
path AhihidoNgoc=f1--g2--reverse(f2)--reverse(g1)--cycle;
clip(pic2,AhihidoNgoc);
add(pic2);
// Draw two graphs
draw(f1^^f2,blue);
draw(g1^^g2,red);
// Draw Xaxis and Yaxis
path Xaxis=(-8,0)--(8,0),Yaxis=(0,F(0.2))--(0,F(-0.2));
draw(Xaxis,Arrow(1bp,arrowhead=TeXHead));
draw(Yaxis,BeginArrow(1bp,arrowhead=TeXHead));
// Add labels
label(Label("$(mathcal{C}_1)$",Relative(0.6),UnFill),f1,blue);
label(Label("$(mathcal{C}_1)$",Relative(0.4),LeftSide,UnFill),f2,blue);
label(Label("$(mathcal{C}_2)$",Relative(0.6),LeftSide,UnFill),g1,red);
label(Label("$(mathcal{C}_2)$",Relative(0.4),UnFill),g2,red);
label(Label("$(A_1)$",UnFill),(7,G(-0.25)),blue);
label(Label("$(A_2)$",UnFill),(-7,G(-0.25)),red);
label(Label("$(A_3)$",UnFill),(-7,G(0.25)),blue);
label(Label("$(A_4)$",UnFill),(7,G(0.25)),red);
frame f;
label(f,Label("$(A_5)$"),0,Fill(white));
add(rotate(45)*f);
Answered by user213378 on November 1, 2021
For hatching, I didn't use patterns as it is hard to customize. In this attempt, I used:
ystep
parameter)clip
to specify the filling areaHere is the corresponding code:
documentclass[12pt,a4paper,openany]{book}
usepackage{pgfplots}
pgfplotsset{compat=1.15}
usepackage{amsmath,amssymb,amsthm}
begin{document}
begin{tikzpicture}[line cap=round,line join=round,x=1cm,y=1cm]
begin{axis}[unbounded coords=jump,
x=1cm,y=1cm,
axis lines=middle,
xmin=-8,
xmax=8,
ymin=-5,
ymax=5,
ytick=empty,
xtick=empty,
axis on top]
% A3 hatch
begin{scope}
clip plot[samples=51,domain=-8:-0.1] (x, {1/x}) -| (-8,-1/8) --cycle;
draw[blue!20,xstep=0cm,ystep=0.5cm,rotate=45] (-15,-15) grid (15,15);
end{scope}
% A1 hatch
begin{scope}
clip plot[samples=51,domain=0.1:8] (x, {1/x}) |- (0.1,1/0.1) --cycle;
draw[blue!20,xstep=0cm,ystep=0.5cm,rotate=45] (-15,-15) grid (15,15);
end{scope}
% A4 hatch
begin{scope}
clip plot[samples=51,domain=-8:-0.1] (x, {-1/x}) -| (-8,1/8) --cycle;
draw[red!20,xstep=0cm,ystep=0.5cm,rotate=-45] (-25,-25) grid (15,15);
end{scope}
% A2 hatch
begin{scope}
clip plot[samples=51,domain=0.1:8] (x, {-1/x}) |- (0.1,-1/0.1) --cycle;
draw[red!20,xstep=0cm,ystep=0.5cm,rotate=-45] (-25,-25) grid (15,15);
end{scope}
% Fill between
begin{scope}
fill[yellow!10,opacity=] plot[samples=51,domain=0.1:8] (x, {-1/x}) -- plot[samples=51,domain=8:0.1] (x, {1/x}) -- plot[samples=51,domain=-0.1:-8] (x, {-1/x}) -- plot[samples=51,domain=-8:-0.1] (x, {1/x}) -- cycle ;
end{scope}
% Your code (I removed path names)
addplot[line width=2pt,color=blue,smooth,samples=51,domain=-8:-0.1] {(1/x)};
addplot[line width=2pt,color=blue,smooth,samples=51,domain=-8:-0.1] {(1/x)} node[pos=0.1,below=40mm]{$(A_3)$}node[pos=0.1,below=20mm,right=40mm]{$(mathcal{C}_1)$};
addplot[line width=2pt,color=blue,smooth,samples=51,domain=0.1:8] {(1/x)} node[pos=0.95,above=20mm]{$(A_1)$}node[pos=0.95,above=20mm,left=50mm]{$(mathcal{C}_1)$};
addplot[line width=2pt,color=red,smooth,samples=51,domain=0.1:8] {-(1/x)} node[pos=0.95,below=40mm]{$(A_4)$}node[pos=0.95,below=20mm,left=50mm]{$(mathcal{C}_2) $};
addplot[line width=2pt,color=red,smooth,samples=51,domain=-8:-0.1] {-(1/x)} node[pos=0.1,above=30mm]{$(A_4)$}node[pos=0.1,above=20mm,right=40mm]{$(mathcal{C}_2) $};
end{axis}
end{tikzpicture}
end{document}
yields:
For hatching the middle region, here is the corresponding code:
documentclass[12pt,a4paper,openany]{book}
usepackage{pgfplots}
pgfplotsset{compat=1.15}
usepackage{amsmath,amssymb,amsthm}
%%%%%%%%%%%%%%%%%%%
begin{document}
begin{tikzpicture}[line cap=round,line join=round,x=1cm,y=1cm]
begin{axis}[unbounded coords=jump,
x=1cm,y=1cm,
axis lines=middle,
xmin=-8,
xmax=8,
ymin=-5,
ymax=5,
ytick=empty,
xtick=empty,
axis on top]
% A3 hatch
begin{scope}
clip plot[samples=51,domain=-8:-0.1] (x, {1/x}) -| (-8,-1/8) --cycle;
draw[blue!20,xstep=0cm,ystep=0.5cm,rotate=45] (-15,-15) grid (15,15);
end{scope}
% A1 hatch
begin{scope}
clip plot[samples=51,domain=0.1:8] (x, {1/x}) |- (0.1,1/0.1) --cycle;
draw[blue!20,xstep=0cm,ystep=0.5cm,rotate=45] (-15,-15) grid (15,15);
end{scope}
% A4 hatch
begin{scope}
clip plot[samples=51,domain=-8:-0.1] (x, {-1/x}) -| (-8,1/8) --cycle;
draw[red!20,xstep=0cm,ystep=0.5cm,rotate=-45] (-25,-25) grid (15,15);
end{scope}
% A2 hatch
begin{scope}
clip plot[samples=51,domain=0.1:8] (x, {-1/x}) |- (0.1,-1/0.1) --cycle;
draw[red!20,xstep=0cm,ystep=0.5cm,rotate=-45] (-25,-25) grid (15,15);
end{scope}
% Fill between
begin{scope}
clip plot[samples=51,domain=0.1:8] (x, {-1/x}) -- plot[samples=51,domain=8:0.1] (x, {1/x}) -- plot[samples=51,domain=-0.1:-8] (x, {-1/x}) -- plot[samples=51,domain=-8:-0.1] (x, {1/x}) -- cycle ;
draw[orange!40,xstep=0cm,ystep=0.5cm,rotate=-45] (-25,-25) grid (15,15);
draw[orange!40,xstep=0cm,ystep=0.5cm,rotate=45] (-25,-25) grid (15,15);
node[above right] at (0,0){$(A_5)$};
end{scope}
addplot[line width=2pt,color=blue,smooth,samples=51,domain=-8:-0.1] {(1/x)};
addplot[line width=2pt,color=blue,smooth,samples=51,domain=-8:-0.1] {(1/x)} node[pos=0.1,below=40mm]{$(A_3)$}node[pos=0.1,below=20mm,right=40mm]{$(mathcal{C}_1)$};
addplot[line width=2pt,color=blue,smooth,samples=51,domain=0.1:8] {(1/x)} node[pos=0.95,above=20mm]{$(A_1)$}node[pos=0.95,above=20mm,left=50mm]{$(mathcal{C}_1)$};
addplot[line width=2pt,color=red,smooth,samples=51,domain=0.1:8] {-(1/x)} node[pos=0.95,below=40mm]{$(A_4)$}node[pos=0.95,below=20mm,left=50mm]{$(mathcal{C}_2) $};
addplot[line width=2pt,color=red,smooth,samples=51,domain=-8:-0.1] {-(1/x)} node[pos=0.1,above=30mm]{$(A_4)$}node[pos=0.1,above=20mm,right=40mm]{$(mathcal{C}_2) $};
end{axis}
end{tikzpicture}
end{document}
which yields:
In this case, I've added two rotated grids.
Answered by LaTeXdraw-com on November 1, 2021
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