How to use linear interpolation to fill gaps to generate a contour (closed surface)

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M.S. Khan 2019-7-26

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评论： M.S. Khan 2019-7-27

M = 0 0 0
    0 0 3
    0 3 3
    3 3 3
    0 0 0
    0 0 3
    3 0 0
    0 0 0
    
%  in the first colmn, btween 4th & 7th rows, i wan to fill 3. in the last column, between 4th and 6th i want to fill 3.
X = ~all(M==0,2)
N = interp1(find(X),M(X,:), 'nearest')
% its not giving me solution.

i am focusing only first and last column to generate controur (closed surface )

Plz need some tips.

your cooperation is highly appreciated.

warm regards

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Answer 1

madhan ravi 2019-7-26

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编辑：madhan ravi 2019-7-26

在 MATLAB Online 中打开

"i am focusing only first and last column..."

M = [0 0 0;...
     0 0 3;...
     0 3 3;...
     3 3 3;...
     0 0 0;...
     0 0 3;...
     3 0 0;...
     0 0 0];
Constant = 3; % example value
f = find(M(:,1));
fx = f .* [true;false(numel(f)-1,1)];
M(setdiff(nonzeros(fx):max(f),f),1) = Constant;
l = find(M(:,end));
lx = l .* [true;false(numel(l)-1,1)];
M(setdiff(nonzeros(lx):max(l),l),end) = Constant

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madhan ravi 2019-7-26

编辑：madhan ravi 2019-7-26

I seemed to have answered your original question "% in the first colmn, btween 4th & 7th rows, i wan to fill 3. in the last column, between 4th and 6th i want to fill 3....

i am focusing only first and last column to generate controur (closed surface )" . You would be better off posting a new question.

M.S. Khan 2019-7-27

Dear Dr. M. Ravi if I have matrix in this shape. M =[0 0 0; 2 2 3; 3 3 0; 0 0 0; 3 3 0; 2 2 3; 0 0 0; 3 3 2; 0 0 0; 3 3 3] How can I fill: 3 0 0 3 —> 3 3 3 3 3 0 3 0 2 —> 3 3 3 0 2 3 0 3 2 0 3 0 3 —> 3 3 3 2 0 3 3 3

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