Change the value in multiple text file?

Hi, I want change several value on my text file and i'm doing it manually. Is there a faster way to change a value in a multiple text file? All my text file have same matrix dimension.

Here are my example code that i do manually:

ZEE=xlsread('zee.xlsx','Area','B2:MP138');
ZEE=ZEE';
A=load('daya50MW.txt');
B=load('dayaelninoMW.txt');
for i=1:353
        for j=1:137
            if (ZEE(i,j) == 1)
                daya50zee(i,j)=A(i,j);   
            else
                daya50zee(i,j)=NaN;
            end
        end
end
for i=1:353
        for j=1:137
            if (ZEE(i,j) == 1)
                dayaelninozee(i,j)=B(i,j);   
            else
                dayaelninozee(i,j)=NaN;
            end
        end
end

Thank you

Answer 1

[KSSV]

You need not to take a loop, you can straight away use the logical indexing.

ZEE=xlsread('zee.xlsx','Area','B2:MP138');
ZEE=ZEE';
A=load('daya50MW.txt');
B=load('dayaelninoMW.txt');
daya50zee = NaN(size(A)) ; 
dayaelninozee = NaN(size(A)) ; 
daya50zee(ZEE == 1) = A(ZEE == 1) ; 
dayaelninozee(ZEE == 1) = B(ZEE == 1) ;