3D Scatter

3D scatter graphs are frequently used when the data are not arranged on a rectangular grid. Simple 3D scatter graphs display an object or marker corresponding to each datum. More complicated scatter graph include datum specific marker attributes, drop-lines and combinations of the scatter data with additional objects such as a fitted surface.

simple scatter plot

Scatter plots can be drawn with drop-lines (lines from the datum to some key location such as the origin or a particular plane).

scatter with drop-lines

scatter with drop-lines to the origin

You can associated additional information with each datum using color as in the example above, but you can also use object size or object orientation.

scatter with variable object size

Here is an example of a scatter plot where we display local orientation of a Lissajous figure using 3D arrows as the scatter object.

Lissajous scatter with arrows pointing along the curve

Another common application of scatter plots is to display both measured experimental data and the theoretical fit. The example below shows some random data with a transluscent kriging surface fit.

scatter and surface fit