How to write a value with zeros before the value in matlab?

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Farshid Daryabor 2016-11-14

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评论： Farshid Daryabor 2016-11-14

Dear,

how to write/print a value with zeros before the value by the sprintf function, e.g., writing/printing the following form;

test_007120128O.nc

data_013587626O.nc

Regards,

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Answer 1

Adam 2016-11-14

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https://ww2.mathworks.cn/matlabcentral/answers/312163-how-to-write-a-value-with-zeros-before-the-value-in-matlab#answer_243236

编辑：Adam 2016-11-14

在 MATLAB Online 中打开

sprintf( '%05.3d', 20 )

for example will pad leading 0s upto the number you specify (5 in this case, including the 20, so 3 additional 0s), but to get what you want depends what exactly you are starting with. If you always want 9 digits then

sprintf( '%09d', yourNumber )

should work

doc sprintf

covers this if you click on the 'formatSpec' hyperlink.

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Adam 2016-11-14

编辑：Adam 2016-11-14

在 MATLAB Online 中打开

In response to what you posted below, the syntax you posted doesn't seem to work at all, to even give what you show, but this works for me:

file=sprintf('%s%s_%09dO.nc', directory,'test',mynumber)

It is the rest of your sprintf format specification and input arguments that appear to not be quite right. For a start you specify 4 distinct fields, but only supply 3 inputs. The final %s that you have should not be there and mynumber should not be in a string.

Farshid Daryabor 2016-11-14