MATLAB: How to round the decimal

array

Dear All;

I have a number array x = [0.00135678 0.00076243;0.0000045789 0.01234567];

Then i just want to round x to become as: results:[0.0013 0.00076; 0.0000045 0.012];

 What to do?

Thanks in advance…..

Best Answer

Try this:

x = [0.00135678 0.00076243;0.0000045789 0.01234567];
L10 = log10(x);                                                 % Base 10 Logarithm
mant = fix(10.^rem(L10,1)*100);                                 % Calculate Mantissa & Remove Extra Digits
expt = floor(L10)-1;                                            % Determine Exponent
Result = mant .* 10.^expt
Result =
     0.001300000000000   0.000760000000000
     0.000004500000000   0.012000000000000

Related Solutions

MATLAB: How can I round a number

I am not certain exactly what you want.

One of these should work:

x1 = 0.0001;
x2 = 0.001;
y1 = round(x1)
y2 = round(x2)
roundn = @(x,n) round(x*10.^n)./(10.^n);
z1 = roundn(x1,3)
z2 = roundn(x2,3)

The built-in MATLAB round function rounds to the nearest integer. In R2015a, you can also have it round to a specific number of decimal places, but if you have an earlier version, my ‘roundn’ anonymous function will do the same thing.

Run my code snippet here to find out which of them does what you want.

MATLAB: Extracting values from a cell then converting to a matrix

A([1,2],:) = [];
A(:,1) = [];
Mat = cell2mat(A)

Best Answer

Related Solutions

MATLAB: How can I round a number

MATLAB: Extracting values from a cell then converting to a matrix

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