Left 6 digits of a 9 digit number that could be incomple

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wesso Dadoyan
wesso Dadoyan 2017-10-8
评论： wesso Dadoyan 2017-10-8
I have a column of 9 digit numbers that I want to trim to the left 6 digits.For example,931146104 should be 931146. Sometimes for small numbers the 9 digit column contains numbers that are fewer than 9 digit . for example 3100 should be 000003100 and the 6 digit number is consequently 000003. This manipulation is far beyond my basic matlab skills. I am wondering how to compute the 6 digit number in this context.

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Walter Roberson
Walter Roberson 2017-10-8
编辑：Walter Roberson 2017-10-8
In vectorized form,
num2str( floor(n(:)/10^3), '%.06d')
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Walter Roberson
Walter Roberson 2017-10-8
Is that a problem? You have a fixed number of columns of output (that is, 6), and you did not say what data type you need to be output.
If you need a cell array of character vectors, then
cellstr( num2str( floor(n(:)/10^3), '%.06d') )

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