How to add spaces in front of numbers to make their length a constant value

For example:

http://tinyurl.com/sd2013

Thank you.

Answer 1

[Fangjun Jiang]

a=[36.897, 1369.4587
0.3, 2.5
1, 2
25.8,3.125];

b=num2str(a);
b(:,8:12)=[]

[Liqing]

Thanks.

But is there a way to specify that in sprintf? '%10.?f' ?

What should be the '?' then?

Answer 2

[Walter Roberson]

sprintf('%20.2f ', a)

[Liqing]

Thanks, but I can not lock the digits after the dot. In the same column, I could have values such as 2.5, 1369.4587, or 2. We really want to conserve the original significant number for each of these individual values.

[Liqing]

I guess it should be: sprintf('%20f ', a)

Thanks.

[Walter Roberson]

You might want to use %20g perhaps.

Answer 3

[Fangjun Jiang]

a=[36.897, 1369.4587
0.3, 2.5
1, 2
25.8,3.125];

b=sprintf('%6g%10.8g\n',a')

You might need to adjust the field width and precision based on your larger set of data.