MATLAB: To Enter a Value in a Formulate

formulate

Hello,

I have a formulate and use seperate value for each calculation. I would like to enter the value manually.

An example:

formulate = 3*pi*r^2*4*T

Here I want to enter T value manually for each calculation.

Which code example should I use for this ?

Best Answer

There are some different options. If you want to enter the value in the command window:

T = input('Enter value of T')

or if you want a dialog box:

V = inputdlg('Enter value of T')
T = str2num(V{1})

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MATLAB: How to choose the Inputs in the input dialogue box and enter value of the selected ones

I have made some changes in your code and I think it is working fine now. I have just added items to prompt and definput dynamically based on the indx vector which captures the indices of the inputs you have picked.

list={'ux','uy','t','u','theta','x','y','r','R','H','th'} 
list0=['Enter a value of ux in m/s',"Enter a value of uy in m/s","Enter a value of t in s","Enter a value of u in m/s","Enter a value of \theta (in degrees)","Enter a value of x in m","Enter a value of y in m","Enter a value of r in m","Enter a value of R in m","Enter a value of H in m","Enter a value of th in s"] 
list1=['1','2','3','4','5','6','7','8','9','0','1'] 
[indx,tf] = listdlg('ListString',list,"SelectionMode",'multiple') 
prompt=[] 
dlgtitle = 'Input Value'; 
definput = {} 
for i=1:length(indx) 
   prompt=[prompt,list0(indx(i))]; 
   definput=[definput,list1(indx(i))] 
end 
opts.Interpreter = 'tex'; 
answer = inputdlg(prompt,dlgtitle,[1 40],definput,opts);

MATLAB: Trouble formulating minimization problem

I assume V is of double type.

 [m,n] = size(V);
 [x,y] = ndgrid(1:m,1:n);
 x = x(:); y = y(:);
 P = [x.^2,y.^2,x.*y,x,y,ones(m*n,1)]\V(:);

The elements of P will be your desired least square coefficients.

Best Answer

Related Solutions

MATLAB: How to choose the Inputs in the input dialogue box and enter value of the selected ones

MATLAB: Trouble formulating minimization problem

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