Access the x and y values using cell index

Hi all,

I am trying to access the values of both x and y values using just the cell index similar to the structure shown below.

In other words, I am trying to answer the questions: what is the values of x and y in a given cell?

Here is my code.

close all;
clear all;

%set up the x axis
xmin = 0;
xmax = 1;
dx   = 0.25;
x = linspace(xmin,xmax,5);
%set up the y axis
ymin = 0;
ymax = 1;
dy   = 0.25;
y = linspace(ymin,ymax,5);
%calculate the mid points on x axis
xa = x(1:end-1);
xb = x(2:end);
Mid_x = (xb+xa)/2; 
%calculate the mid points on y axis
ya = y(1:end-1);
yb = y(2:end);
Mid_y = (yb+ya)/2; 
%construct the index matrix of the cells
N = numel(Mid_x); 
M = numel(Mid_y); 
NCells = M * N; 
for i = 1:N 
    for j = 1:M 
        CellInd(i,j)= N*(i-1)+j; 
    end
end

Any help would be appreicted.

Thanks.

[Image Analyst]

Not sure what you want or what you have. I don't think you are using a "cell array". I think you're using cell like how Excel calls cells, or else your cell is just a region of values in some gridded layout. Do you have some area that spans 0-1 in each direction and is divided up into 4x4 = 16 different regions (cells)? And you have some vector or array that defines where each region starts and stops? Well, for example in the lower left region going fromm 0-0.25 in both x and y, there are of course an infinite number of numbers in that region. Do you just want the coordinate of the middle point, like (0.125, 0.125)?

[Lama Hamadeh]

I would like to be able to know the range of values of x and y in each cell. So for example, if I say what are the range of values of x and y in cell 4? I should have and . Hope this clarifies what I need to do.

Answer 1

[Image Analyst]

You can get the dividing values between each cell like this:

divisions = linspace(0, 1, 5)

divisions = 1×5

0 0.2500 0.5000 0.7500 1.0000