Find mid position value

Plz help me

How i find the mid position in x y values.

this is my code

clear all;

[filename pathname]=uigetfile('*.jpg;*.png;*.tif;*.tiff;*.gif;*.bmp;');

inputimage=imread([pathname filename]);

I=inputimage;

% I = imread('5.png') ;

I = rgb2gray(I) ;

[y,x] = find(I) ;

figure

imshow(I)

hold on

plot(x,y,'.b')

% x
% y
% z=(y+x)/2
% plot(z,'.r')

plot(x(1),y(1),'*y')

plot(x(end),y(end),'*y')

% 

line([x(1),0],[y(1), 0])

line([x(end),0],[y(end), 0])

figure(1);line([0 1],[0 1]);

[Rik]

What do you mean with midpoint? There are several options of what you could mean.

Also, use the {}Code button for proper markup of your code. It vastly increases the readability of your question, increasing the chance that someone is going to read it.

[KSSV]

You need to find the coordinates of full blue line and then find the mid point....this is the second time you posed the same question. Attach your original image with only blue line.

Answer 1

[KSSV]

Let 2.png be your image.

I = imread('2.png') ;
I = rgb2gray(I) ;
[y,x] = find(I) ;
% Mid position 
mpx = mean(x) ;
mpy = mean(y) ;

imshow(I) ;
hold on

plot(mpx,mpy,'*b')