How can extract data in scatter plot??

Hi all

I have two catgories of data that have between 0-1. I plotted these data in scatter form. Now I want to extract the range of data in the X-axis with length 0.01 and find Y value corresponding to x value.

please help me.

thanks.

[Scott MacKenzie]

What do you mean by I want to extract the range of data in the X-axis with length 0.01? A range has two values, not one.

Also, it would help if you post your data and code.

[MOzhdeh Salimi]

Yes, i want to classification my data to classes with 0.01 length. For example: Class1: 0-0.0.1 Class2:0.0.1-0.0.2 . . . And then find corresponding y value to these class.

Answer 1

[Scott MacKenzie]

% test data
x = rand(1, 100);
y = rand(1, 100);

% find elements for class 1 (x is between 0 and 0.1)
idx = find(x >= 0 & x < 0.1);
xClass1 = x(idx);
yClass1 = y(idx);

% output data for 1st class (just for demo)
[xClass1' yClass1']

ans = 7×2

0.0656 0.9182 0.0330 0.5282 0.0287 0.0501 0.0358 0.3897 0.0360 0.6975 0.0660 0.8916 0.0480 0.2643

% repeat for other classes or setup in a loop

[MOzhdeh Salimi]

thank you .

But my data are double and this code have erorr.

this is my code:

% read image and fit regression line%

VF = imread('Vf.tif');

Tnormal= imread('Tnormmsh.tif');

[i,j]=size(VF);

length=i*j;

X=VF(1:length);

Y=Tnormal(1:length);

Minx=min(X);

Maxx=max(X);

for X=Minx:0.01:Maxx

a=X

end

[MOzhdeh Salimi]

your answer is completely true.