display X and Y values on respective axis with bar function

Hey, I'm having trouble plotting a graph using the bar function. I have 2 vectors X and Y and as a result of:

   bar(X,Y,0.85,'grouped');axis([0 23 0 1]);grid minor;hold on;

I obtain a bar for every value of Y that matches X, but I'd like to display all the X and Y components on their axes.

For the X axis im only printing the first value of the X vector. I'd also like to display the grid correctly, because not always it is displayed.. (Horizontal grid for intervals of 1, vertical grid for intervals of 0.05).

Any ideas how to fix this?

Thanks!