MATLAB: How to replace roundn

roundn

My Matlab version is R2014a, I need a replacement for the function roundn that was common in the matlab previous versions, but not more recognized for the 2014 version. Part of my code is: drawLine([0 roundn(max(z1),2)+100], [0 min(z1)]); hold on; ps: z1 is 2601x1double

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MATLAB has always had a round function, recently incorporating the functionality of roundn from the MApping Toolbox.

You can create your own version with this anonymous function:

roundn = @(x,n) 10.^n .* round(x/10.^n);

It produced the same answer for the same input as the example in the documentation for it when I tested it, so it should be a seamless replacement.

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: About roundn() function in matlab 2013a

roundn() is part of the Mapping Toolbox. You probably do not have that toolbox installed or licensed in your 2013a version.

There is also a roundn() File Exchange contribution; it is possible that at some point you had installed that.

Note: as of R2014b, the round() function of MATLAB was enhanced to support rounding to a particular number of digits.

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MATLAB: How can I round a number

MATLAB: About roundn() function in matlab 2013a

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