x = -2.9:0.2:2.9;
bar(x,exp(-x.*x))
bar(y);bar(x,y);[xb,yb] = bar(...)
bar(y) draws a bar graph of the elements of vector y.
bar(x,y) draws a bar graph of the elements in vector y at the locations specified in vector x. The values in x must be evenly spaced and ascending.
If x and y are matrices of the same size, one bar graph per column is drawn.
[xb,yb] = bar(y) and [xb,yb] = bar(x,y) do not draw graphs, but return vectors xb and yb such that plot(xb,yb) plots the bar chart. This is useful in situations where more control is needed over the appearance of a graph; for example, to incorporate a bar chart into a more elaborate plot statement.
x = -2.9:0.2:2.9;bar(x,exp(-x.*x))
hist,stairs
(c) Copyright 1994 by The MathWorks, Inc.