how can I generate a vector containing the GHI at 12:30 for every day of the year using 'for' loops and 'if' statement?

I have GHI data for every hour of the day for 365 days how can I generate a vector containing the GHI at 12:30 for every day of the year using 'for' loops and 'if' statement?

Answer 1

[Viren Gupta]

You first need to read the data into a matrix (you can use readtable function). 'Readtable' function will give you a table from your csv file. You can extract the GHI vector from your table as illustrated here. Suppose you have read the GHI data into a vector A. Assuming that GHI value at 12.30 is same as that at 12.00(you can change the assumptions also). You can refer to the following code

counter=13;
result=[];
for i=counter:length(A)
  if(i==13)
    result=[result A(i,1)]; 
  end
  if(i==(counter+24))
     result=[result A(i,1)]; 
     counter=i;
  end
end

The 'result' will be your desired vector.

[Ahmed Mazid]

Thank you