on rounding decimals at a specific digit

Question

Mohammad Farhat 2018-7-10

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https://ww2.mathworks.cn/matlabcentral/answers/409691-on-rounding-decimals-at-a-specific-digit

回答： Brian Cianciola 2018-7-10

Howe can i truncate my decimals at a certain digit, round is not working "Error using sym/round Too many input arguments"

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Answer 1

Image Analyst 2018-7-10

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https://ww2.mathworks.cn/matlabcentral/answers/409691-on-rounding-decimals-at-a-specific-digit#answer_328277

Evidently you have an old version of MATLAB where you can't specify the number of digits in round(), but you're calling round with the second argument as if you did have a modern version.

It seems you forgot to fill out your release when you were making the post so no one knows what version you have, so all I can say (unless you add your release) is that you have an old version before the number of digits option was introduced.

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Mohammad Farhat 2018-7-10

I have the 2015a version, and the option where I can specify the number of digits is working but not always. I have a matrix of numerical elements (sold(n,m)) when i try in the command window round (sold(1,2), 2) for example it gives the aforementioned error, but when I enter the value instead of sold, it works

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