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  • $\begingroup$ Many thanks J.M.! The method works very well. If I want to plot more details, I should increase p or PlotPoints? Besides, may I know what does p actually refer to? $\endgroup$ Commented Apr 1, 2019 at 3:20
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    $\begingroup$ You can try increasing both for more detail, but of course at the expense of increased computation time. As noted, I just took the first p singular values and vectors to generate an approximation to your data. $\endgroup$ Commented Apr 1, 2019 at 4:11