How can i rewrite this logic for n elements?

if  q(1,1) == 1
    disp("q1 is selected")
    D = D1;
    P= P1;
elseif q(1,2) == 1
    disp("q2 is selected")
    D = D2;
    P= P2;
elseif q(1,3) == 1
    disp("q3 is selected")
    D = D3;
    P= P3;
end 

Hello I have to re-write this logic for 10elements i.e what if q array consists of 1*10 slots unlike above i have just 3. also it is very unpredictable that when the value of q elements can be 1.

[Torsten]

Exactly one of the q(1,:) equals 1 ? Or could there be several ? Or none ?

[Sumanth]

yes

[Torsten]

yes to what ?

[Sumanth]

exactly one of the q values = 1.

Answer 1

[Walter Roberson]

https://www.mathworks.com/help/deeplearning/ref/onehotdecode.html

Or...

Dvals = [D1, D2, D3, D4, D5, D6, D7, D8, D9, D10];
Pvals = [P1, P2, P3, P4, P5, P6, P7, P9, P9, P10];
idx = find(q == 1, 1);  %first
if ~isempty(idx)
    D = Dvals(idx);
    P = Pvals(idx);
else
    uh oh
end

[Sumanth]

The code seems right but doesnt work when D1,...D10 or P1,..P10 are arrays not single values.

[John D'Errico]

@Sumanth So then learn to use arrays in their many forms, possibly multidimensional arrays, or cell arrays.

[Walter Roberson]

Dvals = {D1, D2, D3, D4, D5, D6, D7, D8, D9, D10};
Pvals = {P1, P2, P3, P4, P5, P6, P7, P9, P9, P10};
idx = find(q == 1, 1);  %first
if ~isempty(idx)
    D = Dvals{idx};
    P = Pvals{idx};
else
    uh oh
end