Density 2d | the D3 Graph Gallery

main density 2d types

A 2d density chart allows to visualize the combined distribution of two quantitative variables. The concept is always the same: one variable is represented on the X axis, the other on the Y axis. Then, the number of observations within a particular area of the 2D space is counted and represented by a color gradient.

Hexbin chart

Group two-dimensional points into hexagonal bins. Possible thanks to the d3-hexbin plugin.

2d density with shading

Very close from the contour plot, but shading is used to make the link between layers.

2d histogram

Group two-dimensional points into rectangular bins. Possible thanks to the d3-rectbin plugin.

Contour plot

Representation of contour polygons computed using marching squares