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In Matlab, how to draw a bar graph?

The MATLAB bar() function creates a bar graph in a figure. Let's consider the following vectors :

x = [1970 1980 1990 2000 2010 2020];
y = [185  248  125  53   200  189];

The following creates a bar graph with one bar for each element of y:

bar (y)

The following draws the bars at the location specified by x: