Format number in fprintf

2020 10 27
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更新时间：2020 10 27
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Hello everyone i have using function of fprintf to create .dat file as
1 0.000000 0.000000 0.000000
2 0.000000 0.000000 4.000000
3 0.000000 0.000000 1.000000
4 0.000000 0.000000 2.000000
5 0.000000 11.000000 4.000000
6 0.000000 12.000000 4.000000
7 0.000000 13.000000 4.000000
8 0.000000 14.000000 4.000000
9 0.000000 15.000000 4.000000
10 0.000000 16.000000 4.000000
11 0.000000 17.000000 4.000000
12 0.000000 18.000000 4.000000
13 0.000000 12.000000 0.000000
14 0.000000 11.000000 0.000000
15 0.000000 10.000000 0.000000 etc.
Is it possible? to re-arrange in the same format as
1 0.000000 0.000000 0.000000
2 0.000000 0.000000 4.000000
3 0.000000 0.000000 1.000000
4 0.000000 0.000000 2.000000
5 0.000000 11.000000 4.000000
6 0.000000 12.000000 4.000000
7 0.000000 13.000000 4.000000
8 0.000000 14.000000 4.000000
9 0.000000 15.000000 4.000000
10 0.000000 16.000000 4.000000
11 0.000000 17.000000 4.000000
12 0.000000 18.000000 4.000000
13 0.000000 12.000000 0.000000
14 0.000000 11.000000 0.000000
15 0.000000 10.000000 0.000000

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Stephen23
Stephen23 2020-10-27
@Rut Su: I formatted your examples as monospaced type (select text, click "code" button). You can do this yourself in future.
Your second matrix has very odd alignment, are you really sure that is what you want?
Trang Hu Jia
Trang Hu Jia 2020-10-27
Hi Stephen Cobeldick
Thank you for your replying this topic.
I'm just re-correct the format that I want.
Sudhakar Shinde
Sudhakar Shinde 2020-10-27
check formatspec with fprintf.

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Stephen23
Stephen23 2020-10-27

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I am guessing that unlike your example you actually want the columns to be aligned, e.g. where M is your matrix:
>> fprintf(' %9d %9.6f %15.6f %15.6f\n',M.')
1 0.000000 0.000000 0.000000
2 0.000000 0.000000 4.000000
3 0.000000 0.000000 1.000000
4 0.000000 0.000000 2.000000
5 0.000000 11.000000 4.000000
6 0.000000 12.000000 4.000000
7 0.000000 13.000000 4.000000
8 0.000000 14.000000 4.000000
9 0.000000 15.000000 4.000000
10 0.000000 16.000000 4.000000
11 0.000000 17.000000 4.000000
12 0.000000 18.000000 4.000000
13 0.000000 12.000000 0.000000
14 0.000000 11.000000 0.000000
15 0.000000 10.000000 0.000000

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Trang Hu Jia
Trang Hu Jia 2020-10-27
Hello Stephen Cobeldick
This is exactly what I want Stephen, you made my day ! Thank you very much.
Whould you mind to guide me, if I want to change my array to be this one
1 0.000000 0.000000 0.000000
2 0.000000 0.000000 4.000000
3 0.000000 0.000000 1.000000
4 0.000000 0.000000 2.000000
5 0.000000 11.00000 4.000000
6 0.000000 12.00000 4.000000
7 0.000000 13.00000 4.000000
8 0.000000 14.00000 4.000000
9 0.000000 15.00000 4.000000
10 0.000000 16.00000 4.000000
11 0.000000 17.00000 4.000000
12 0.000000 18.00000 4.000000
13 0.000000 12.00000 0.000000
14 0.000000 11.00000 0.000000
15 0.000000 10.00000 0.000000
Thanks in advance.

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