calculate a function based on array data

I need to calculate dispersion effect based on how much farther the observer from the chimney.

I came up with this kind calculation :

% edited for full variable
hasil = str2num(get(handles.hasil, 'string'));
koefisiena = str2num(get(handles.koefisiena, 'string'));
sigmaz = str2num(get(handles.sigmaz, 'string'));
vangin = str2num(get(handles.vangin, 'string'));

for distance= [0.25; 0.5; 0.75; 1; 1.25; 1.5; 1.75; 2; 2.25; 2.5;];
    y= {(hasil./(2*3.14*(koefisiena*(distance.^0.894))*sigmaz*vangin))};
end

however it gives an error output

Error using  ./ 
Matrix dimensions must agree.

Error in desain>pushbutton2_Callback (line 520)
    y= {(hasil./(2*3.14*(koefisiena*(jaraks.^0.894))*sigmaz*vangin))};

Even after changing the notation of division from matrix

./

into scalar

/

it still produces the typical error. I want to know how exactly to calculate the matrix value of a function

[KSSV]

YOu have not defined many variables.....how do you expect us to help you?

[Muhammad Waqi Azizi]

I've edited the code, added the variable which taken from handles as input text

[Adam]

Using the debugger is by far the easiest way to solve problems like this. Just look at the sizes of the two sides of the ./ operator on command line and it should be obvious. We have no idea what size they are since you just convert a string to get them. I assume they aren't all scalars otherwise I would not expect such an error.

[Stephen23]

"Even after changing the notation of division from matrix ./ into scalar /"

According to the MATLAB help thosee operators are actually:

• / mrdivide (i.e. matrix right division), and
• ./ rdivide (i.e. array right division).

See also:

https://www.mathworks.com/help/matlab/matlab_prog/array-vs-matrix-operations.html

Learning the difference between matrix and array operators is critical to using MATLAB.