[Tex/LaTex] Error when creating a surf plot with matlab2tikz

matlab2tikzpgfplotstikz-pgf

I'm using matlab2tikz to generate the tikz code for my figures. When compiling the document with the figure code as below, i get an error:

Package pgfplots Error: No such element: \pgfplotsarrayselect64\of{pgfpl@cm@mymap}

Now what really bugles my mind is that when i am generating the same figure with another dataset, it works perfectly fine! And as fare as i can see, the actual tikz code is identical except for the data points included. What on earth in the second data-set figure makes it fail when compiling?

I updated all packages in Mixtex, but that didn't seem to do much. Any idea's as to what i am doing wrong would be greatly appreciated as i am becoming increasingly desperate to find the issue.

Fig1, Working

\begin{tikzpicture}
\begin{axis}[%
view={45}{35},
width=\figurewidth,
height=\figureheight,
scale only axis,
xmin=0.1, xmax=1,
xtick={0.1,1},
xlabel={kh},
xmajorgrids,
ymin=10, ymax=80,
ytick={10,80},
ylabel={HLmax},
ymajorgrids,
zmin=1, zmax=4,
ztick={1,2,3,4},
zlabel={Iteratons},
zmajorgrids,
axis lines*=left]

\addplot3[%
surf,
colormap={mymap}{[1pt] rgb(0pt)=(0,1,1); rgb(63pt)=(1,0,1)},
shader=faceted,
draw=black]
coordinates{ 
(0.1,10,1)(0.1,20,1)(0.1,30,1)(0.1,40,1)(0.1,50,1)(0.1,60,1)(0.1,70,1)(0.1,80,1)

(0.2,10,1)(0.2,20,1)(0.2,30,1)(0.2,40,1)(0.2,50,1)(0.2,60,1)(0.2,70,1)(0.2,80,1)

(0.3,10,1)(0.3,20,1)(0.3,30,1)(0.3,40,1)(0.3,50,1)(0.3,60,1)(0.3,70,1)(0.3,80,1)

(0.4,10,1)(0.4,20,1)(0.4,30,1)(0.4,40,1)(0.4,50,1)(0.4,60,1)(0.4,70,1)(0.4,80,1)

(0.5,10,1)(0.5,20,1)(0.5,30,1)(0.5,40,1)(0.5,50,1)(0.5,60,1)(0.5,70,1)(0.5,80,1)

(0.6,10,1)(0.6,20,1)(0.6,30,1)(0.6,40,1)(0.6,50,1)(0.6,60,1)(0.6,70,1)(0.6,80,1)

(0.7,10,1)(0.7,20,1)(0.7,30,1)(0.7,40,1)(0.7,50,1)(0.7,60,1)(0.7,70,1)(0.7,80,1)

(0.8,10,1)(0.8,20,1)(0.8,30,1)(0.8,40,1)(0.8,50,1)(0.8,60,1)(0.8,70,1)(0.8,80,1)

(0.9,10,1)(0.9,20,1)(0.9,30,1)(0.9,40,1)(0.9,50,1)(0.9,60,1)(0.9,70,1)(0.9,80,1)

(1,10,1)(1,20,1)(1,30,1)(1,40,1)(1,50,1)(1,60,1)(1,70,1)(1,80,1)

};
\end{axis}
\end{tikzpicture}%

Fig 2, not working

\begin{tikzpicture}

\begin{axis}[%
view={45}{35},
width=\figurewidth,
height=\figureheight,
scale only axis,
xmin=0.1, xmax=1,
xtick={0.1,1},
xlabel={kh},
xmajorgrids,
ymin=10, ymax=80,
ytick={10,80},
ylabel={HLmax},
ymajorgrids,
zmin=1, zmax=4,
ztick={1,2,3,4},
zlabel={Iteratons},
zmajorgrids,
axis lines*=left]

\addplot3[%
surf,
colormap={mymap}{[1pt] rgb(0pt)=(0,1,1); rgb(63pt)=(1,0,1)},
shader=faceted,
draw=black]
coordinates{ 
(0.1,10,2)(0.1,20,2)(0.1,30,2)(0.1,40,3)(0.1,50,3)(0.1,60,3)(0.1,70,3)(0.1,80,3)

(0.2,10,2)(0.2,20,2)(0.2,30,2)(0.2,40,2)(0.2,50,2)(0.2,60,3)(0.2,70,3)(0.2,80,3)

(0.3,10,2)(0.3,20,2)(0.3,30,2)(0.3,40,2)(0.3,50,2)(0.3,60,2)(0.3,70,3)(0.3,80,3)

(0.4,10,2)(0.4,20,2)(0.4,30,2)(0.4,40,2)(0.4,50,2)(0.4,60,2)(0.4,70,3)(0.4,80,3)

(0.5,10,2)(0.5,20,2)(0.5,30,2)(0.5,40,2)(0.5,50,2)(0.5,60,2)(0.5,70,3)(0.5,80,3)

(0.6,10,1)(0.6,20,1)(0.6,30,2)(0.6,40,2)(0.6,50,2)(0.6,60,2)(0.6,70,3)(0.6,80,3)

(0.7,10,1)(0.7,20,1)(0.7,30,1)(0.7,40,2)(0.7,50,2)(0.7,60,2)(0.7,70,3)(0.7,80,3)

(0.8,10,1)(0.8,20,1)(0.8,30,1)(0.8,40,2)(0.8,50,2)(0.8,60,2)(0.8,70,3)(0.8,80,3)

(0.9,10,1)(0.9,20,1)(0.9,30,1)(0.9,40,1)(0.9,50,2)(0.9,60,2)(0.9,70,3)(0.9,80,3)

(1,10,1)(1,20,1)(1,30,1)(1,40,1)(1,50,2)(1,60,2)(1,70,3)(1,80,3)

};
\end{axis}
\end{tikzpicture}%

Best Answer

It's just an error in the colormap definition.

colormap={mymap}{[1pt] rgb(0pt)=(0,1,1); rgb(63pt)=(1,0,1)},

Try to fix it with:

colormap ={mymap}{rgb(0pt)=(0,1,1); rgb(63pt)=(1,0,1)},

Related Solutions

[Tex/LaTex] pgfplots surf plot: don’t draw ‘NaN’

I have found a quick n'dirty solution to the problem.

Instead of preventing nan fields from being drawn, I rendered them transparent. To do so, I set opacity of the fields depending on the point meta data. The opacity has to be = 0 for nan fields and >= 1 for other fields.

Therefore, the value of point meta min has to be slightly lower than the smallest point meta value (depending on the numerical resolution), so that ceil(pgfplotspointmetatransformed) >= 1 for the point with the smallest point meta.

The opacity is then set to opacity = ceil(\pgfplotspointmetatransformed). (ceil has to be defined) Since pgfplots sets all nan point meta values to point meta min, they appear transparent. Note that the border is not drawn for nan fields.

Here's the code:

\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=1.10}
\begin{document}

\tikzset{
    declare function={Ceil(\x)=round(\x+0.49999);}
}

\begin{tikzpicture}

    \begin{axis}[%
        view={0}{90},
        scale only axis,
        xmin=1, xmax=5,ymin=1,ymax=5,zmin=-1,zmax=1,
        hide axis,
        colormap/jet,
        colorbar,
        point meta min=0.999999,
        point meta max=100
    ]

    \addplot3[%
        surf,
        shader=flat corner,
        draw=black,
        colormap/jet,
        point meta=explicit,
        opacity=Ceil(\pgfplotspointmetatransformed),
        mesh/rows=5
    ]
    table[row sep=crcr,header=false,meta index=3] {
        1   1   0   1  \\
        1   2   0   10  \\
        1   3   0   20  \\
        1   4   0   30  \\
        1   5   0   1  \\
        2   1   0   40  \\
        2   2   0   nan  \\
        2   3   0   50  \\
        2   4   0   60   \\
        2   5   0   1  \\
        3   1   0   70  \\
        3   2   0   80  \\
        3   3   0   90   \\
        3   4   0   nan  \\
        3   5   0   1  \\
        4   1   0   75  \\
        4   2   0   80  \\
        4   3   0   85  \\
        4   4   0   100  \\
        4   5   0   1  \\
        5   1   0   1  \\
        5   2   0   1  \\
        5   3   0   1   \\
        5   4   0   1   \\
        5   5   0   1   \\
};
\end{axis}
\end{tikzpicture}

\end{document}

And here the output: enter image description here

[Tex/LaTex] pgfplots: percentage in matrix plot

It does not work in your MWE because you are overwriting it by also giving the option nodes near coors to the \addplot command. Remove the latter one (or specify format here), and it will print. I added a thinspace before the percentage sign, although it can also be recommended to load the siunitx package and let that format and typeset the values for you.

Anyway, here's the quickfixed version:

\documentclass[border=3pt]{standalone}
\usepackage{pgfplots}
\pgfplotsset{%
  width=5cm,
  height=18cm,
  compat=1.13,
  colormap={blackwhite}{gray(0cm)=(1); gray(1cm)=(0.5)},
  xticklabels={LPIBG, ALL, HPIBG},
  xtick={0,...,2},
  ytick=\empty
}

\begin{document}
\begin{tikzpicture}
\begin{axis}[%
  enlargelimits=false,
  xlabel style={font=\footnotesize},
  ylabel style={font=\footnotesize},
  legend style={font=\footnotesize},
  xticklabel style={font=\footnotesize},
  yticklabel style={font=\footnotesize},
  colorbar,
  colorbar style={%
    ytick={0,20,40,60,80,100},
    yticklabels={0,20,40,60,80,100},
    yticklabel={\pgfmathprintnumber\tick\,\%},
    yticklabel style={font=\footnotesize}
  },
  point meta min=0,
  point meta max=100,
  nodes near coords={\pgfmathprintnumber\pgfplotspointmeta\,\%},
  every node near coord/.append style={xshift=0pt,yshift=-7pt, black, font=\footnotesize},
]

\addplot[
matrix plot,
mesh/cols=3,
point meta=explicit]
table[meta=C]{
  x y C
  0 0 80
  1 0 36
  2 0 40
  0 1 64
  1 1 80
  2 1 60
  0 2 52
  1 2 84
  2 2 72
  0 3 72
  1 3 28
  2 3 32
  0 4 56
  1 4 84
  2 4 80
  0 5 72
  1 5 52
  2 5 44
  0 6 4
  1 6 84
  2 6 41
  0 7 37
  1 7 69
  2 7 84
  0 8 63
  1 8 53
  2 8 82
  0 9 78
  1 9 74
  2 9 39
  0 10 39
  1 10 63
  2 10 88
  0 11 76
  1 11 74
  2 11 49
  0 12 39
  1 12 6
  2 12 88
  0 13 46
  1 13 33
  2 13 75
  0 14 88
  1 14 67
  2 14 54
  0 15 79
  1 15 83
  2 15 75
  0 16 50
  1 16 46
  2 16 71
  0 17 92
  1 17 71
  2 17 75
  0 18 46
  1 18 33
  2 18 8
};
\end{axis}
\end{tikzpicture}
\end{document}

Best Answer

Related Solutions

[Tex/LaTex] pgfplots surf plot: don’t draw ‘NaN’

[Tex/LaTex] pgfplots: percentage in matrix plot

Related Question