_Matlab Simulink problem about PV Stand alone System_

I'm trying to make a PV Stand Alone Sys, but the problem is that, when I use XY Scope to show the P-V Characteristic, it just pop up not thing or a curve that doesn't show any relations between P and V Here is my work

Here is what I get from the scope

It should be like this instead:

Can you help me out on this, I'm very appreciate for that!

Answer 1

[Sebastian Castro]

Notice the X-Y axis coordinates the XY Graph block. The limits are -1 to 1 on both axes. You can double-click the block to open its dialog and change the axes limits. It just might match the shape in your last figure there -- they both start at (0,0) with a positive slope.

Alternatively, you could just log all that data to the workspace and plot it in a MATLAB figure because those autoscale just fine :)

- Sebastian