I have a long CSV data file:
x,y1,y2... 1,v1,v1... 2,v2,v2... ....
pgfplots to plot all the lines. I also want to add mark shapes. But the problem is that the data is too dense, and I have a limited space, so the marks stick together.
\addplot[blue, thin, mark=square, each nth point=20] table ...
But it also skipped the data points.
I want to have a smooth line, but only a few marks. How can I do that?