How to make a 2D histogram with D3 library (tutorial)

Before you get started with this article, I suggest you to read the article about Hexagonal Binning. In that article this method of data aggregation is shown and explained in detail. Two scatterplots, generated from two different datasets are compared, and so a class of specific datasets are highlighted. In fact, analyzing “sparse” datasets can be difficult, especially when we are looking for trends or clusters.

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Matlab: symbolic calculation

Matlab is an application that we all know but we do not always have awareness of its potential. In fact, Matlab, in addition to perform the direct numerical calculation in which we are all accustomed to, it also allows us to evaluate analytically (ie, by keeping the parametric expressions) many of these calculations. In fact, thanks to the Symbolic Math Toolbox, Matlab provides us with a set of instructions for the symbolic (or literal) calculation.

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