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Let's say that i am calculating every element of a 100X300 table by using equation A

I use two for loops (i m doing this in matlab)

for i=1:100

for j=1:300

element(i,j)=... (it is the equation A)

end

end

equation A involves the neighboring elements

What if, a few elements of the table must be calculated with a different equation, equation B and this must happen inside the two for loops

for example elements (49,81) (49,82)

(50,81) (50,82)

(51,81) (51,82)

(52,81) (52,82)

i could use if and elseif function for every single element, like

if i==49 && j==81

element(i,j)=...equation B

elseif i==50 && j==81

element(i,j)=...equation B

...

...

end

Is there another, better way to do it ???

Thanks a lot!

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# Calculating, among the points of a mesh, only a few points with a different equation.

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