plotting the average of a range of data

How can I plot the average of a range of data in matlab??

Suppose,

F(x,y)=x+y

And x and y are square matrix of dimension 100x100. I need to plot F(x,y) along x. And constraint is average of y for a range of values of dimension 5x100.

[KALYAN ACHARJYA]

And constraint is average of y for a range of values of dimension 5x100.

@Anindita Deka, sorry this part is not clear to me.

[Anindita Deka]

The function F(x,y) should be plotted with respect to x variable by keeping y value constant. And the constant y value is the mean value of y for a certain range of dimension.

[TADA]

Im not sure i follow, but maybe have a look at movmean

[Guillaume]

For me, the whole thing is not clear. If x is a 100x100 matrix, how can you plot against x? A plot normally plots against scalar variables.

The best thing would be to give a concrete example of what's desired.