I'm trying to plot a heat map with this data. I expected to create a heat map like the one given in the answer of this. (Although my plot will be only a quarter of it 0 to 90 degrees). But when I run my code all I get is this picture.
What am I doing wrong? I thought that the code will interpolate the data in-between.
Here is my MWE
\documentclass[border=10pt]{standalone}
\usepackage{pgfplots}
\usepackage{xcolor}
\pgfplotsset{compat=newest}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
colormap/jet,
colorbar,
view={0}{90}]
\addplot3[surf,shader=flat] file {TEMP_dummy.dat};
\end{axis}
\end{tikzpicture}
\end{document}
How do I sort this problem?
