Help me about plot in GUIDE. I have a problem

1) http://imgur.com/H9kmn.png

2) http://free.ssc.vn/images/87Untitledd.png

Hi I'm Nhan from Vietnam. I'm a student.

I make a guide for my physics app(thermodynamics) but I have a problem in plot. I want to plot a graph of a thermo cycle. For example a cycle in the first 1)picture.

I first plot process 1 -> 2. then I plot 2 -> 3, it change the rate in x and y axis. The graph is too big and not tidy like the 1) picture above. - The second picture is my guide.

Could you please help me for this problem. thanks you very much.

Answer 1

[Image Analyst]

If you don't like how it automatically decides the start and end of the x axis, you can specify it to be what you want with xlim():

xlim([0, 1.5]); % Or whatever numbers you want.