How can I draw a parity plot?

Hello everyone,

I have two series of data as follows: x=[0.8288 1.021 1.2093 1.4674 1.7577 1.9679 2.2465 2.9532]; y=[0.8242 1.05976 1.2804 1.5481 1.79315 2.0521 2.3475 2.9939];

In which x is experiment values (horizontal axis) and y (vertical axis) is models data. I would like to have a parity plot including a bisector , upper bound and lower bound limited within 5% as scatter error.

How can I write a code for this? Thanks in advance

Answer 1

[pfb]

 % scatter plot
 plot(x,y,'.');
 hold
 % bisector (basically the same as Thorsten)
 plot([0.5 3],[0.5 3]);
 % upper and lower bounds (?)
 plot([0.5 3],1.1*[0.5 3]);
 plot([0.5 3],0.9*[0.5 3]);

[Parham Babakhani Dehkordi]

again only bisector appeared, I attached an excel file for you as an example. you can easily understand what I meant by upper and lower bound.

[pfb]

sorry, I forgot to hold the plot. Now it should work

[Parham Babakhani Dehkordi]

sorry but it does not work properly. it seems ok, however no improvement. I attached the result in a curve for you.

[Parham Babakhani Dehkordi]

Attached file is the result by your code.

[pfb]

sorry, I did a stupid mistake. Now it should work

[Parham Babakhani Dehkordi]

Perfect, now it works Thanks a lot

[Thangaraja J]

Thank you for the query and the corresponding answer

Answer 2

[Thorsten]

 plot(x,y, '.')
 line([0.5 3],[0.5 3])

[Parham Babakhani Dehkordi]

these two code lines give me only the bisector. If I want to define data in a range, lets say, +10% and -10% as upper and lower bound of bisector, how can I create this?