>>
>> x= 1:4
x =
1 2 3 4
>> y=5:7
y =
5 6 7
>> [X,Y] = meshgrid(x,y)
X =
1 2 3 4
1 2 3 4
1 2 3 4
Y =
5 5 5 5
6 6 6 6
7 7 7 7
>>
Note how meshgrid spreads the x vector across the rows, and
spreads the y vector across each column.