I have two graphs (image below). I want to do a 3-D contour plot which will represent the difference in characteristics of these two graphs.How can I do that? Please help me. Two .mat files are attached.

I have plotted following two graphs with this code:

clc
clear
close all
a=importdata('ranu normal.mat');
b=a.data;
x=b(23970:25750,1);
[val, idx] = max(abs(x));
plot(abs(x), 'b-', 'LineWidth', 2);
hold on;
plot(idx,val,'-o','markerfacecolor',[1 0 0]);
grid on;
line([idx, idx], [0, val],...
  'LineWidth', 2, 'Color', 'r')
%Next Person
a=importdata('robin roy.mat');
b=a.data;
x=b(22500:24320,1);
[val, idx] = max(abs(x));
figure();
plot(abs(x), 'b-', 'LineWidth', 2);
hold on;
plot(idx,val,'-o','markerfacecolor',[1 0 0]);
grid on;
line([idx, idx], [0, val],...
  'LineWidth', 2, 'Color', 'r')

[Biswarup Dutta]

Does anyone have any idea?

[KSSV]

What do you mean by which will represent the difference in characteristics of these two graphs ?

[Biswarup Dutta]

I mean to say the area under the curve divided by the red line. For the first graph Area-A & B are almost equal but for second graph, Area-B is more than Area-A.

[Biswarup Dutta]

Please anybody help me out.

[KSSV]

Show them by bar chart...?

[Biswarup Dutta]

I have done the following. But how can I create the z matrix? So that I can do "contour(x,y,z)".

clc
clear
close all
a=importdata('ranu normal.mat');
b=a.data;
x=b(23970:25750,1);
a1=importdata('robin roy.mat');
b1=a1.data;
y=b1(22000:25830,1);
[x,y] = meshgrid(x,y);
contour(x,y,z)

[KSSV]

And what would be z?

Answer 1

[Image Analyst]

How about a ribbon plot: https://www.mathworks.com/help/matlab/ref/ribbon.html?s_tid=srchtitle

Or check out the gallery: https://www.mathworks.com/products/matlab/plot-gallery.html