Vertigo could be either from a peripheral (labyrinth and vestibular nerve) or a central disorder (central nervous system). Central vertigo is usually a result of an abnormal processing of the vestibular sensory input by the central nervous system. See the image below.
scatterhist(x,y) creates a 2-D scatter plot of the data in vectors x and y, and displays the marginal distributions of x and y as univariate histograms on the horizontal and vertical axes of the scatter plot, respectively. example.
This example shows a simple scatter plot with grouped data that is clustered. proc sgplot data=sashelp.revhub2; scatter x=hub y=revenue / group=type groupdisplay=cluster clusterwidth=0.5; xaxis type=discrete; run; Create the scatter plot. In the SCATTER statement, the GROUP= option groups the data by the TYPE variable. The GROUPDISPLAY option specifies that the grouped markers are clustered. The CLUSTERWIDTH option specifies the width of the group clusters.