Often when working on microcontroller projects you need a background function to run at regular intervals. This is often done by setting up a hardware timer to
To make a density map from a 2D set of data, the first step is to compute values for the third dimension. (Gnuplot has no facilities for computing these values automatically.) The simplest way is to make a 2D histogram; the plot is divided in small 2D regions, and the z-values are proportional to the number of points inside these regions. The following Python script will make an histogram from a time series of two dihedral angles.
S. Ahmad, A. Battle, Z. Malkani, und S. Kamvar. Proceedings of the 24th annual ACM symposium on User interface software and technology, Seite 53--64. New York, NY, USA, ACM, (2011)