PGFPlots with TikZ produces unstable plots











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I'm currently trying to get some of my Octave plots to work natively in a LaTeX document. My method of choice is to use the plot parameters of my Octave scripts in a standalone TikZ document that uses PGFPlots and is imported to a larger LaTeX document with some discussion on the results. Unfortunately, there have been some setbacks in my first foray to PGFPlots.



It seems that the plot bears little resemblance to the plot in the Octave script and that the plot is unstable in the sense that its axis offset and its slope change when I adjust the seemingly unrelated axis properties.



Here is the code:



documentclass[crop,tikz]{standalone}
usepackage{pgfplots}
begin{document}
begin{tikzpicture}
begin{axis}[
width=8cm,
height=6cm,
samples=6,
restrict x to domain*=-0.15:0.15,
restrict y to domain*=-0.0004:0.0004,
xmin=-0.05, xmax=0.05,
ymin=-0.0002, ymax=0.0002,
axis lines=left,
grid=both,
compat=newest
]
addplot {0.000018165+0.0014500*x};
end{axis}
end{tikzpicture}
end{document}


The plot passes through the origin even if the formula defines offset. Furthermore, adjustment to the x-domain restrictions change the slope of the plot. I worry that there is a feature of PGFPlots that I'm not yet familiar with and which is distorting my plots.



A plot without offset



To compare, the following Octave plot has a clear offset from the origin for the corresponding red line.Octave plot with an offset










share|improve this question




















  • 1




    Could you add your octave plot for reference, so that we can also try to see the problem?
    – Raaja
    Nov 22 at 12:33












  • I'm adding the reference. The red line corresponds to the blue line above.
    – Tommi Rimpiläinen
    Nov 22 at 12:50






  • 3




    You add all the restrictions plot in a huge domain. Try addplot[domain=-0.05:0.05] {0.000018165+0.0014500*x}; restrict x to domain*=-0.15:0.15, does not set the domain of the plot, as can be seen clearly from the fact that it runs from -4.5 to 4.5.
    – marmot
    Nov 22 at 12:54

















up vote
2
down vote

favorite
1












I'm currently trying to get some of my Octave plots to work natively in a LaTeX document. My method of choice is to use the plot parameters of my Octave scripts in a standalone TikZ document that uses PGFPlots and is imported to a larger LaTeX document with some discussion on the results. Unfortunately, there have been some setbacks in my first foray to PGFPlots.



It seems that the plot bears little resemblance to the plot in the Octave script and that the plot is unstable in the sense that its axis offset and its slope change when I adjust the seemingly unrelated axis properties.



Here is the code:



documentclass[crop,tikz]{standalone}
usepackage{pgfplots}
begin{document}
begin{tikzpicture}
begin{axis}[
width=8cm,
height=6cm,
samples=6,
restrict x to domain*=-0.15:0.15,
restrict y to domain*=-0.0004:0.0004,
xmin=-0.05, xmax=0.05,
ymin=-0.0002, ymax=0.0002,
axis lines=left,
grid=both,
compat=newest
]
addplot {0.000018165+0.0014500*x};
end{axis}
end{tikzpicture}
end{document}


The plot passes through the origin even if the formula defines offset. Furthermore, adjustment to the x-domain restrictions change the slope of the plot. I worry that there is a feature of PGFPlots that I'm not yet familiar with and which is distorting my plots.



A plot without offset



To compare, the following Octave plot has a clear offset from the origin for the corresponding red line.Octave plot with an offset










share|improve this question




















  • 1




    Could you add your octave plot for reference, so that we can also try to see the problem?
    – Raaja
    Nov 22 at 12:33












  • I'm adding the reference. The red line corresponds to the blue line above.
    – Tommi Rimpiläinen
    Nov 22 at 12:50






  • 3




    You add all the restrictions plot in a huge domain. Try addplot[domain=-0.05:0.05] {0.000018165+0.0014500*x}; restrict x to domain*=-0.15:0.15, does not set the domain of the plot, as can be seen clearly from the fact that it runs from -4.5 to 4.5.
    – marmot
    Nov 22 at 12:54















up vote
2
down vote

favorite
1









up vote
2
down vote

favorite
1






1





I'm currently trying to get some of my Octave plots to work natively in a LaTeX document. My method of choice is to use the plot parameters of my Octave scripts in a standalone TikZ document that uses PGFPlots and is imported to a larger LaTeX document with some discussion on the results. Unfortunately, there have been some setbacks in my first foray to PGFPlots.



It seems that the plot bears little resemblance to the plot in the Octave script and that the plot is unstable in the sense that its axis offset and its slope change when I adjust the seemingly unrelated axis properties.



Here is the code:



documentclass[crop,tikz]{standalone}
usepackage{pgfplots}
begin{document}
begin{tikzpicture}
begin{axis}[
width=8cm,
height=6cm,
samples=6,
restrict x to domain*=-0.15:0.15,
restrict y to domain*=-0.0004:0.0004,
xmin=-0.05, xmax=0.05,
ymin=-0.0002, ymax=0.0002,
axis lines=left,
grid=both,
compat=newest
]
addplot {0.000018165+0.0014500*x};
end{axis}
end{tikzpicture}
end{document}


The plot passes through the origin even if the formula defines offset. Furthermore, adjustment to the x-domain restrictions change the slope of the plot. I worry that there is a feature of PGFPlots that I'm not yet familiar with and which is distorting my plots.



A plot without offset



To compare, the following Octave plot has a clear offset from the origin for the corresponding red line.Octave plot with an offset










share|improve this question















I'm currently trying to get some of my Octave plots to work natively in a LaTeX document. My method of choice is to use the plot parameters of my Octave scripts in a standalone TikZ document that uses PGFPlots and is imported to a larger LaTeX document with some discussion on the results. Unfortunately, there have been some setbacks in my first foray to PGFPlots.



It seems that the plot bears little resemblance to the plot in the Octave script and that the plot is unstable in the sense that its axis offset and its slope change when I adjust the seemingly unrelated axis properties.



Here is the code:



documentclass[crop,tikz]{standalone}
usepackage{pgfplots}
begin{document}
begin{tikzpicture}
begin{axis}[
width=8cm,
height=6cm,
samples=6,
restrict x to domain*=-0.15:0.15,
restrict y to domain*=-0.0004:0.0004,
xmin=-0.05, xmax=0.05,
ymin=-0.0002, ymax=0.0002,
axis lines=left,
grid=both,
compat=newest
]
addplot {0.000018165+0.0014500*x};
end{axis}
end{tikzpicture}
end{document}


The plot passes through the origin even if the formula defines offset. Furthermore, adjustment to the x-domain restrictions change the slope of the plot. I worry that there is a feature of PGFPlots that I'm not yet familiar with and which is distorting my plots.



A plot without offset



To compare, the following Octave plot has a clear offset from the origin for the corresponding red line.Octave plot with an offset







tikz-pgf pgfplots






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 22 at 12:49

























asked Nov 22 at 12:25









Tommi Rimpiläinen

134




134








  • 1




    Could you add your octave plot for reference, so that we can also try to see the problem?
    – Raaja
    Nov 22 at 12:33












  • I'm adding the reference. The red line corresponds to the blue line above.
    – Tommi Rimpiläinen
    Nov 22 at 12:50






  • 3




    You add all the restrictions plot in a huge domain. Try addplot[domain=-0.05:0.05] {0.000018165+0.0014500*x}; restrict x to domain*=-0.15:0.15, does not set the domain of the plot, as can be seen clearly from the fact that it runs from -4.5 to 4.5.
    – marmot
    Nov 22 at 12:54
















  • 1




    Could you add your octave plot for reference, so that we can also try to see the problem?
    – Raaja
    Nov 22 at 12:33












  • I'm adding the reference. The red line corresponds to the blue line above.
    – Tommi Rimpiläinen
    Nov 22 at 12:50






  • 3




    You add all the restrictions plot in a huge domain. Try addplot[domain=-0.05:0.05] {0.000018165+0.0014500*x}; restrict x to domain*=-0.15:0.15, does not set the domain of the plot, as can be seen clearly from the fact that it runs from -4.5 to 4.5.
    – marmot
    Nov 22 at 12:54










1




1




Could you add your octave plot for reference, so that we can also try to see the problem?
– Raaja
Nov 22 at 12:33






Could you add your octave plot for reference, so that we can also try to see the problem?
– Raaja
Nov 22 at 12:33














I'm adding the reference. The red line corresponds to the blue line above.
– Tommi Rimpiläinen
Nov 22 at 12:50




I'm adding the reference. The red line corresponds to the blue line above.
– Tommi Rimpiläinen
Nov 22 at 12:50




3




3




You add all the restrictions plot in a huge domain. Try addplot[domain=-0.05:0.05] {0.000018165+0.0014500*x}; restrict x to domain*=-0.15:0.15, does not set the domain of the plot, as can be seen clearly from the fact that it runs from -4.5 to 4.5.
– marmot
Nov 22 at 12:54






You add all the restrictions plot in a huge domain. Try addplot[domain=-0.05:0.05] {0.000018165+0.0014500*x}; restrict x to domain*=-0.15:0.15, does not set the domain of the plot, as can be seen clearly from the fact that it runs from -4.5 to 4.5.
– marmot
Nov 22 at 12:54












1 Answer
1






active

oldest

votes

















up vote
5
down vote



accepted










You are using restrict x to domain*=-0.15:0.15,restrict y to domain*=-0.0004:0.0004,, about which the manual says



enter image description here



However, you do not set an appropriate domain. If you do that,



documentclass[crop,tikz]{standalone}
usepackage{pgfplots}
pgfplotsset{compat=1.16}
begin{document}
begin{tikzpicture}
begin{axis}[
width=8cm,
height=6cm,
samples=6,
restrict x to domain*=-0.15:0.15,
restrict y to domain*=-0.0004:0.0004,
xmin=-0.05, xmax=0.05,
ymin=-0.0002, ymax=0.0002,
axis lines=left,
grid=both,
domain=-0.05:0.05
]
addplot[no marks] {0.000018165+0.0014500*x};
end{axis}
end{tikzpicture}
end{document}


you'll get



enter image description here



which has a clearly visible offset.






share|improve this answer





















  • Adding the domain really was the key.
    – Tommi Rimpiläinen
    Nov 22 at 14:09











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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes








up vote
5
down vote



accepted










You are using restrict x to domain*=-0.15:0.15,restrict y to domain*=-0.0004:0.0004,, about which the manual says



enter image description here



However, you do not set an appropriate domain. If you do that,



documentclass[crop,tikz]{standalone}
usepackage{pgfplots}
pgfplotsset{compat=1.16}
begin{document}
begin{tikzpicture}
begin{axis}[
width=8cm,
height=6cm,
samples=6,
restrict x to domain*=-0.15:0.15,
restrict y to domain*=-0.0004:0.0004,
xmin=-0.05, xmax=0.05,
ymin=-0.0002, ymax=0.0002,
axis lines=left,
grid=both,
domain=-0.05:0.05
]
addplot[no marks] {0.000018165+0.0014500*x};
end{axis}
end{tikzpicture}
end{document}


you'll get



enter image description here



which has a clearly visible offset.






share|improve this answer





















  • Adding the domain really was the key.
    – Tommi Rimpiläinen
    Nov 22 at 14:09















up vote
5
down vote



accepted










You are using restrict x to domain*=-0.15:0.15,restrict y to domain*=-0.0004:0.0004,, about which the manual says



enter image description here



However, you do not set an appropriate domain. If you do that,



documentclass[crop,tikz]{standalone}
usepackage{pgfplots}
pgfplotsset{compat=1.16}
begin{document}
begin{tikzpicture}
begin{axis}[
width=8cm,
height=6cm,
samples=6,
restrict x to domain*=-0.15:0.15,
restrict y to domain*=-0.0004:0.0004,
xmin=-0.05, xmax=0.05,
ymin=-0.0002, ymax=0.0002,
axis lines=left,
grid=both,
domain=-0.05:0.05
]
addplot[no marks] {0.000018165+0.0014500*x};
end{axis}
end{tikzpicture}
end{document}


you'll get



enter image description here



which has a clearly visible offset.






share|improve this answer





















  • Adding the domain really was the key.
    – Tommi Rimpiläinen
    Nov 22 at 14:09













up vote
5
down vote



accepted







up vote
5
down vote



accepted






You are using restrict x to domain*=-0.15:0.15,restrict y to domain*=-0.0004:0.0004,, about which the manual says



enter image description here



However, you do not set an appropriate domain. If you do that,



documentclass[crop,tikz]{standalone}
usepackage{pgfplots}
pgfplotsset{compat=1.16}
begin{document}
begin{tikzpicture}
begin{axis}[
width=8cm,
height=6cm,
samples=6,
restrict x to domain*=-0.15:0.15,
restrict y to domain*=-0.0004:0.0004,
xmin=-0.05, xmax=0.05,
ymin=-0.0002, ymax=0.0002,
axis lines=left,
grid=both,
domain=-0.05:0.05
]
addplot[no marks] {0.000018165+0.0014500*x};
end{axis}
end{tikzpicture}
end{document}


you'll get



enter image description here



which has a clearly visible offset.






share|improve this answer












You are using restrict x to domain*=-0.15:0.15,restrict y to domain*=-0.0004:0.0004,, about which the manual says



enter image description here



However, you do not set an appropriate domain. If you do that,



documentclass[crop,tikz]{standalone}
usepackage{pgfplots}
pgfplotsset{compat=1.16}
begin{document}
begin{tikzpicture}
begin{axis}[
width=8cm,
height=6cm,
samples=6,
restrict x to domain*=-0.15:0.15,
restrict y to domain*=-0.0004:0.0004,
xmin=-0.05, xmax=0.05,
ymin=-0.0002, ymax=0.0002,
axis lines=left,
grid=both,
domain=-0.05:0.05
]
addplot[no marks] {0.000018165+0.0014500*x};
end{axis}
end{tikzpicture}
end{document}


you'll get



enter image description here



which has a clearly visible offset.







share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 22 at 13:02









marmot

83.1k493178




83.1k493178












  • Adding the domain really was the key.
    – Tommi Rimpiläinen
    Nov 22 at 14:09


















  • Adding the domain really was the key.
    – Tommi Rimpiläinen
    Nov 22 at 14:09
















Adding the domain really was the key.
– Tommi Rimpiläinen
Nov 22 at 14:09




Adding the domain really was the key.
– Tommi Rimpiläinen
Nov 22 at 14:09


















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