barh(y) // It creates a horizontal bar graph with one bar for each element in y. If y is an m-by-n matrix, then barh creates m groups of n bars.
barh(x,y)// It draws the bars along the vertical axis at the locations specified by x.

World population by continents
cont=char ('Asia','Europe','Africa',...'N.America','S.America');
pop=[333.2;696;694;437;307];
barh(pop)
for i=1:5,
    gtext(cont(i,:));
end
xlabel('Population in millions');
Title (World population (1992)','fontsize', 18)