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Can't make parabola without including the tip
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I am trying to make an absolute value parabola function with TikZ. When I try to create the right and left sides of the parabola(the ones that would be underneath the x-axis in a normal function) I can't without including a bend underneath the x-axis.
taskbegin{tikzpicture}
draw (-10,0)--(10,0);
draw(0,0) parabola bend(-3,6)(-6,0);
draw(0,0) parabola bend(-3,-6)(2,10);
draw(-6,0) parabola bend(-3,-6)(-8,10);
end{tikzpicture}
tikz-pgf
asked 8 hours ago
DiaWaterBender 4uDiaWaterBender 4u
112 bronze badges
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DiaWaterBender 4u is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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add a comment
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I am trying to make an absolute value parabola function with TikZ. When I try to create the right and left sides of the parabola(the ones that would be underneath the x-axis in a normal function) I can't without including a bend underneath the x-axis.
taskbegin{tikzpicture}
draw (-10,0)--(10,0);
draw(0,0) parabola bend(-3,6)(-6,0);
draw(0,0) parabola bend(-3,-6)(2,10);
draw(-6,0) parabola bend(-3,-6)(-8,10);
end{tikzpicture}
tikz-pgf
asked 8 hours ago
DiaWaterBender 4uDiaWaterBender 4u
112 bronze badges
New contributor
DiaWaterBender 4u is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment
|
I am trying to make an absolute value parabola function with TikZ. When I try to create the right and left sides of the parabola(the ones that would be underneath the x-axis in a normal function) I can't without including a bend underneath the x-axis.
taskbegin{tikzpicture}
draw (-10,0)--(10,0);
draw(0,0) parabola bend(-3,6)(-6,0);
draw(0,0) parabola bend(-3,-6)(2,10);
draw(-6,0) parabola bend(-3,-6)(-8,10);
end{tikzpicture}
tikz-pgf
asked 8 hours ago
DiaWaterBender 4uDiaWaterBender 4u
112 bronze badges
New contributor
DiaWaterBender 4u is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I am trying to make an absolute value parabola function with TikZ. When I try to create the right and left sides of the parabola(the ones that would be underneath the x-axis in a normal function) I can't without including a bend underneath the x-axis.
taskbegin{tikzpicture}
draw (-10,0)--(10,0);
draw(0,0) parabola bend(-3,6)(-6,0);
draw(0,0) parabola bend(-3,-6)(2,10);
draw(-6,0) parabola bend(-3,-6)(-8,10);
end{tikzpicture}
tikz-pgf
tikz-pgf
asked 8 hours ago
DiaWaterBender 4uDiaWaterBender 4u
112 bronze badges
New contributor
DiaWaterBender 4u is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 8 hours ago
DiaWaterBender 4uDiaWaterBender 4u
112 bronze badges
New contributor
DiaWaterBender 4u is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 8 hours ago
DiaWaterBender 4u
asked 8 hours ago
DiaWaterBender 4uDiaWaterBender 4u
112 bronze badges
New contributor
DiaWaterBender 4u is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 8 hours ago
DiaWaterBender 4uDiaWaterBender 4u
112 bronze badges
asked 8 hours ago
DiaWaterBender 4uDiaWaterBender 4u
112 bronze badges
112 bronze badges
New contributor
DiaWaterBender 4u is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
DiaWaterBender 4u is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment
|
add a comment
|
3 Answers
3
active
oldest
votes
Easiest solution is to draw two parabolas, one upside down, and clip them both to just show the parts above your line:
documentclass[border=3.14,tikz]{standalone}
begin{document}
begin{tikzpicture}
draw (-5,0)--(5,0);
begin{scope}
clip (-5,0) rectangle (5,6);
draw (-4,6) parabola bend (0,-2) (4,6);
draw (-4,-6) parabola bend (0,2) (4,-6);
end{scope}
end{tikzpicture}
end{document}
answered 7 hours ago
SkillmonSkillmon
28.1k1 gold badge28 silver badges59 bronze badges
Approved always very simple solutions. Very good.
– Sebastiano
7 hours ago
add a comment
|
Another simple solution is use the plot function and define parabola accordingly:
documentclass[tikz,border=3mm]{standalone}
begin{document}
begin{tikzpicture}
draw (-5,0)--(5,0);
draw[semithick, red] plot [domain=-2:2] (2*x,{abs(x*x-1)});
end{tikzpicture}
end{document}
answered 7 hours ago
ZarkoZarko
147k8 gold badges84 silver badges194 bronze badges
This would be much slower, though, and it is dependent on the sample size (in your output one can see kinks in the parabola for instance). For stuff more complicated thanabs(x^2)this would be the correct approach.
– Skillmon
6 hours ago
add a comment
|
This is really just for fun. You can make TikZ reflect the parabola (or anything you draw) at the x axis (say) automatically. This can be done by installing a nonlinear transformation, which is in this case particularly simple.
documentclass[tikz,border=3mm]{standalone}
usepgfmodule{nonlineartransformations}
makeatletter
defyreflect{%
pgfmathsetmacro{myy}{abs(pgf@y)}%
pgf@y=myy pt}
begin{document}
begin{tikzpicture}
begin{scope}[transform shape nonlinear=true]
pgftransformnonlinear{yreflect}
draw (-5,0)--(5,0);
draw (-4,6) parabola bend (0,-2) (4,6);
end{scope}
end{tikzpicture}
end{document}
As one can see, there are small gaps, so the solution is not as perfect as Skillmon's solution.
answered 6 hours ago
Schrödinger's catSchrödinger's cat
7,61511 silver badges23 bronze badges
Please view the picture with 500/100, I feel parabol doesn't cut Ox axis.
– minhthien_2016
5 hours ago
@minhthien_2016 Yes, this is what is meant by "there are small gaps".
– Schrödinger's cat
5 hours ago
add a comment
|
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
Easiest solution is to draw two parabolas, one upside down, and clip them both to just show the parts above your line:
documentclass[border=3.14,tikz]{standalone}
begin{document}
begin{tikzpicture}
draw (-5,0)--(5,0);
begin{scope}
clip (-5,0) rectangle (5,6);
draw (-4,6) parabola bend (0,-2) (4,6);
draw (-4,-6) parabola bend (0,2) (4,-6);
end{scope}
end{tikzpicture}
end{document}
answered 7 hours ago
SkillmonSkillmon
28.1k1 gold badge28 silver badges59 bronze badges
Approved always very simple solutions. Very good.
– Sebastiano
7 hours ago
add a comment
|
Easiest solution is to draw two parabolas, one upside down, and clip them both to just show the parts above your line:
documentclass[border=3.14,tikz]{standalone}
begin{document}
begin{tikzpicture}
draw (-5,0)--(5,0);
begin{scope}
clip (-5,0) rectangle (5,6);
draw (-4,6) parabola bend (0,-2) (4,6);
draw (-4,-6) parabola bend (0,2) (4,-6);
end{scope}
end{tikzpicture}
end{document}
answered 7 hours ago
SkillmonSkillmon
28.1k1 gold badge28 silver badges59 bronze badges
Approved always very simple solutions. Very good.
– Sebastiano
7 hours ago
add a comment
|
Easiest solution is to draw two parabolas, one upside down, and clip them both to just show the parts above your line:
documentclass[border=3.14,tikz]{standalone}
begin{document}
begin{tikzpicture}
draw (-5,0)--(5,0);
begin{scope}
clip (-5,0) rectangle (5,6);
draw (-4,6) parabola bend (0,-2) (4,6);
draw (-4,-6) parabola bend (0,2) (4,-6);
end{scope}
end{tikzpicture}
end{document}
answered 7 hours ago
SkillmonSkillmon
28.1k1 gold badge28 silver badges59 bronze badges
Easiest solution is to draw two parabolas, one upside down, and clip them both to just show the parts above your line:
documentclass[border=3.14,tikz]{standalone}
begin{document}
begin{tikzpicture}
draw (-5,0)--(5,0);
begin{scope}
clip (-5,0) rectangle (5,6);
draw (-4,6) parabola bend (0,-2) (4,6);
draw (-4,-6) parabola bend (0,2) (4,-6);
end{scope}
end{tikzpicture}
end{document}
answered 7 hours ago
SkillmonSkillmon
28.1k1 gold badge28 silver badges59 bronze badges
edited 7 hours ago
answered 7 hours ago
SkillmonSkillmon
28.1k1 gold badge28 silver badges59 bronze badges
answered 7 hours ago
SkillmonSkillmon
28.1k1 gold badge28 silver badges59 bronze badges
answered 7 hours ago
SkillmonSkillmon
28.1k1 gold badge28 silver badges59 bronze badges
28.1k1 gold badge28 silver badges59 bronze badges
Approved always very simple solutions. Very good.
– Sebastiano
7 hours ago
add a comment
|
Approved always very simple solutions. Very good.
– Sebastiano
7 hours ago
Approved always very simple solutions. Very good.
– Sebastiano
7 hours ago
Approved always very simple solutions. Very good.
– Sebastiano
7 hours ago
add a comment
|
Another simple solution is use the plot function and define parabola accordingly:
documentclass[tikz,border=3mm]{standalone}
begin{document}
begin{tikzpicture}
draw (-5,0)--(5,0);
draw[semithick, red] plot [domain=-2:2] (2*x,{abs(x*x-1)});
end{tikzpicture}
end{document}
answered 7 hours ago
ZarkoZarko
147k8 gold badges84 silver badges194 bronze badges
This would be much slower, though, and it is dependent on the sample size (in your output one can see kinks in the parabola for instance). For stuff more complicated thanabs(x^2)this would be the correct approach.
– Skillmon
6 hours ago
add a comment
|
Another simple solution is use the plot function and define parabola accordingly:
documentclass[tikz,border=3mm]{standalone}
begin{document}
begin{tikzpicture}
draw (-5,0)--(5,0);
draw[semithick, red] plot [domain=-2:2] (2*x,{abs(x*x-1)});
end{tikzpicture}
end{document}
answered 7 hours ago
ZarkoZarko
147k8 gold badges84 silver badges194 bronze badges
This would be much slower, though, and it is dependent on the sample size (in your output one can see kinks in the parabola for instance). For stuff more complicated thanabs(x^2)this would be the correct approach.
– Skillmon
6 hours ago
add a comment
|
Another simple solution is use the plot function and define parabola accordingly:
documentclass[tikz,border=3mm]{standalone}
begin{document}
begin{tikzpicture}
draw (-5,0)--(5,0);
draw[semithick, red] plot [domain=-2:2] (2*x,{abs(x*x-1)});
end{tikzpicture}
end{document}
answered 7 hours ago
ZarkoZarko
147k8 gold badges84 silver badges194 bronze badges
Another simple solution is use the plot function and define parabola accordingly:
documentclass[tikz,border=3mm]{standalone}
begin{document}
begin{tikzpicture}
draw (-5,0)--(5,0);
draw[semithick, red] plot [domain=-2:2] (2*x,{abs(x*x-1)});
end{tikzpicture}
end{document}
answered 7 hours ago
ZarkoZarko
147k8 gold badges84 silver badges194 bronze badges
answered 7 hours ago
ZarkoZarko
147k8 gold badges84 silver badges194 bronze badges
answered 7 hours ago
ZarkoZarko
147k8 gold badges84 silver badges194 bronze badges
answered 7 hours ago
ZarkoZarko
147k8 gold badges84 silver badges194 bronze badges
147k8 gold badges84 silver badges194 bronze badges
This would be much slower, though, and it is dependent on the sample size (in your output one can see kinks in the parabola for instance). For stuff more complicated thanabs(x^2)this would be the correct approach.
– Skillmon
6 hours ago
add a comment
|
This would be much slower, though, and it is dependent on the sample size (in your output one can see kinks in the parabola for instance). For stuff more complicated thanabs(x^2)this would be the correct approach.
– Skillmon
6 hours ago
This would be much slower, though, and it is dependent on the sample size (in your output one can see kinks in the parabola for instance). For stuff more complicated than
abs(x^2) this would be the correct approach.– Skillmon
6 hours ago
This would be much slower, though, and it is dependent on the sample size (in your output one can see kinks in the parabola for instance). For stuff more complicated than
abs(x^2) this would be the correct approach.– Skillmon
6 hours ago
add a comment
|
This is really just for fun. You can make TikZ reflect the parabola (or anything you draw) at the x axis (say) automatically. This can be done by installing a nonlinear transformation, which is in this case particularly simple.
documentclass[tikz,border=3mm]{standalone}
usepgfmodule{nonlineartransformations}
makeatletter
defyreflect{%
pgfmathsetmacro{myy}{abs(pgf@y)}%
pgf@y=myy pt}
begin{document}
begin{tikzpicture}
begin{scope}[transform shape nonlinear=true]
pgftransformnonlinear{yreflect}
draw (-5,0)--(5,0);
draw (-4,6) parabola bend (0,-2) (4,6);
end{scope}
end{tikzpicture}
end{document}
As one can see, there are small gaps, so the solution is not as perfect as Skillmon's solution.
answered 6 hours ago
Schrödinger's catSchrödinger's cat
7,61511 silver badges23 bronze badges
Please view the picture with 500/100, I feel parabol doesn't cut Ox axis.
– minhthien_2016
5 hours ago
@minhthien_2016 Yes, this is what is meant by "there are small gaps".
– Schrödinger's cat
5 hours ago
add a comment
|
This is really just for fun. You can make TikZ reflect the parabola (or anything you draw) at the x axis (say) automatically. This can be done by installing a nonlinear transformation, which is in this case particularly simple.
documentclass[tikz,border=3mm]{standalone}
usepgfmodule{nonlineartransformations}
makeatletter
defyreflect{%
pgfmathsetmacro{myy}{abs(pgf@y)}%
pgf@y=myy pt}
begin{document}
begin{tikzpicture}
begin{scope}[transform shape nonlinear=true]
pgftransformnonlinear{yreflect}
draw (-5,0)--(5,0);
draw (-4,6) parabola bend (0,-2) (4,6);
end{scope}
end{tikzpicture}
end{document}
As one can see, there are small gaps, so the solution is not as perfect as Skillmon's solution.
answered 6 hours ago
Schrödinger's catSchrödinger's cat
7,61511 silver badges23 bronze badges
Please view the picture with 500/100, I feel parabol doesn't cut Ox axis.
– minhthien_2016
5 hours ago
@minhthien_2016 Yes, this is what is meant by "there are small gaps".
– Schrödinger's cat
5 hours ago
add a comment
|
This is really just for fun. You can make TikZ reflect the parabola (or anything you draw) at the x axis (say) automatically. This can be done by installing a nonlinear transformation, which is in this case particularly simple.
documentclass[tikz,border=3mm]{standalone}
usepgfmodule{nonlineartransformations}
makeatletter
defyreflect{%
pgfmathsetmacro{myy}{abs(pgf@y)}%
pgf@y=myy pt}
begin{document}
begin{tikzpicture}
begin{scope}[transform shape nonlinear=true]
pgftransformnonlinear{yreflect}
draw (-5,0)--(5,0);
draw (-4,6) parabola bend (0,-2) (4,6);
end{scope}
end{tikzpicture}
end{document}
As one can see, there are small gaps, so the solution is not as perfect as Skillmon's solution.
answered 6 hours ago
Schrödinger's catSchrödinger's cat
7,61511 silver badges23 bronze badges
This is really just for fun. You can make TikZ reflect the parabola (or anything you draw) at the x axis (say) automatically. This can be done by installing a nonlinear transformation, which is in this case particularly simple.
documentclass[tikz,border=3mm]{standalone}
usepgfmodule{nonlineartransformations}
makeatletter
defyreflect{%
pgfmathsetmacro{myy}{abs(pgf@y)}%
pgf@y=myy pt}
begin{document}
begin{tikzpicture}
begin{scope}[transform shape nonlinear=true]
pgftransformnonlinear{yreflect}
draw (-5,0)--(5,0);
draw (-4,6) parabola bend (0,-2) (4,6);
end{scope}
end{tikzpicture}
end{document}
As one can see, there are small gaps, so the solution is not as perfect as Skillmon's solution.
answered 6 hours ago
Schrödinger's catSchrödinger's cat
7,61511 silver badges23 bronze badges
answered 6 hours ago
Schrödinger's catSchrödinger's cat
7,61511 silver badges23 bronze badges
answered 6 hours ago
Schrödinger's catSchrödinger's cat
7,61511 silver badges23 bronze badges
answered 6 hours ago
Schrödinger's catSchrödinger's cat
7,61511 silver badges23 bronze badges
7,61511 silver badges23 bronze badges
Please view the picture with 500/100, I feel parabol doesn't cut Ox axis.
– minhthien_2016
5 hours ago
@minhthien_2016 Yes, this is what is meant by "there are small gaps".
– Schrödinger's cat
5 hours ago
add a comment
|
Please view the picture with 500/100, I feel parabol doesn't cut Ox axis.
– minhthien_2016
5 hours ago
@minhthien_2016 Yes, this is what is meant by "there are small gaps".
– Schrödinger's cat
5 hours ago
Please view the picture with 500/100, I feel parabol doesn't cut Ox axis.
– minhthien_2016
5 hours ago
Please view the picture with 500/100, I feel parabol doesn't cut Ox axis.
– minhthien_2016
5 hours ago
@minhthien_2016 Yes, this is what is meant by "there are small gaps".
– Schrödinger's cat
5 hours ago
@minhthien_2016 Yes, this is what is meant by "there are small gaps".
– Schrödinger's cat
5 hours ago
add a comment
|
DiaWaterBender 4u is a new contributor. Be nice, and check out our Code of Conduct.
DiaWaterBender 4u is a new contributor. Be nice, and check out our Code of Conduct.
DiaWaterBender 4u is a new contributor. Be nice, and check out our Code of Conduct.
DiaWaterBender 4u is a new contributor. Be nice, and check out our Code of Conduct.
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