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Re: Rounding Digits
Posted:
May 4, 2014 5:44 PM


On Monday, May 5, 2014 9:22:08 AM UTC+12, Kris wrote: > Im trying to create a program that will round any number to any specific digit. I have an array of numbers in column A in an excel document, then the specific digit I want that number rounded to in column B. So, I will use xlsread to gather that information from excel to start. Then I will use xlswrite to send that information to excel in column C (answer). I have a mac so I can see if my code is working or not. I'd appreciate any help. > > > > > > matrix = xlsread('Round.xlsx','A'); > > numbers = matrix(:,1); > > digits = matrix(:,2); > > > > normNums = numbers./digits; > > n = length(normNums); > > signNums = ones(n, 1); > > roundedNormNums = zeros(n, 1); > > roundedNums = zeros(n, 1); > > > > signNums(normNums < 0) = 1; > > normNums(normNums < 0) = normNums(normNums < 0); > > > > > > for i = 1:n > > while (normNums(i)roundedNormNums(i)) > 0.5 > > roundedNormNums(i) = roundedNormNums(i)+1; > > end > > end > > > > %% Calculates the Output > > > > roundedNums = signNums.*roundedNormNums.*digits; > > column_C = xlswrite('Round.xlsx', roundedNums , 'C', sprintf('C1:C%d', n));
Why not simply: normNums = numbers./digits; roundedNums=round(normNums).*digits;



