Issue with the variable after exiting for loop

[GK19]

for ioc=1:1:length(ring_vec)
for ipc=1:1:length(opcon_vec)
for irc=1:1:length(rccorner_vec) 
for inw=1:1:length(nw_vec)      
for ivw=1:1:length(pw_vec)
for ivdp=1:1:length(vd_vec)
for itp=1:1:length(temp_vec)


abc_p = period_arr(ioc,ipc,irc,inw,ivw,ivdp,itp); 

end
end
end
end
end
end
end

dist_p = abs(period_arr - abc_p);
[min_dist_p, idx_p] = min(dist_p(:));

%%%%%%%%%%%%%%%%%%%%%%%%%%

results:

dist_p = 1.98

abc_p is just taking one value of size 1*1, it should take a matrix of
values in 2*7*1*10*10*15*8

How do i get it ? Do i need to declare abc_p before the for loop, if so how
??#
Please help



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