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.
The Scattergram graphs the Admissions Profiles in your results by GPA and SAT or ACT scores. Each dot represents an individual CollegeData user whose Admissions Profile lists the selected college as a college choice for the class year you've selected.