1

I would like to make a surface plot of data.txt. I use the following code as a MWE.

\documentclass{article}

\usepackage{tikz,pgfplots}
\pgfplotsset{compat = 1.8}

\begin{document}

\begin{tikzpicture}
 \begin{axis}
  \addplot3[surf, mesh/ordering = y varies] table {data.txt};
 \end{axis}
\end{tikzpicture}

\end{document}

This code produces the following result:

Observed result

Using the same data in Matlab gives me the following surface plot, so this is the expected result.

Expected result

I have searched quite a bit, but I just cannot find out what is wrong. I expect some sort of incorrect indexing.

closed as off-topic by Jake, user31729, Svend Tveskæg, Guido, Benedikt Bauer Sep 10 '14 at 8:37

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  • 3
    Something went wrong with your data export, the data.txt file you posted doesn't correspond to the data shown in your second plot. For example, take a look at the point at (4,14): in your data.txt file, it has a value of 0.85, but in the plot it's almost zero. – Jake Sep 8 '14 at 16:25
  • You are right, I was too focused on the LaTeX code and did not see the error in my data file. My apologies. I fixed it now. – Ritz Sep 9 '14 at 7:12
  • Could you link to the new data.txt file? – Jake Sep 9 '14 at 17:26
  • Since it was only some example data, I fixed the issue and went on to use my real data. I do not have the new data.txt file anymore. – Ritz Sep 10 '14 at 7:12
  • 4
    Problem was caused by an incorrect data file. – Jake Sep 10 '14 at 7:26

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