Vector values replaced by zeros

Hello everyone.

I'm working with a dataset (excel file with columns of different variables, with a lot of values for each of them) and trying to do regressions, but i'm facing a problem : when i run vectors that contain values bigger than 1, then matlab seems to replace all values by zeros. Here is a piece of my code:

"

MMData=dataset('XLSFile', 'DescriptiveStatsCorrectedV4.xlsx');

A=MMData.roa;

B=MMData.assets;

C=MMData.roe;

D=MMData.percfemborrowers;

"

A (roa) and D (percfemborrowers) have only values <1 (in absolute value), so no problems with them.

B (roe) and C (assets) have values >1 (in absolute value), and this is what matlab diplays for them for example :

    0.0000
    0.0000
    0.0000
   -0.0000
   -0.0000

Could someone help me? Thanks

ps : A weird fact : calculating the mean of one of this vector (ex: for C) still works...

Answer 1

[James Tursa]

The values in all likelihood are not exact 0's, they just display as 0's to the precision that is printed. To print more digits, e.g.,

format long

or

format long g

Also pay attention to any exponent that appears at the start of the display. E.g.,

>> a = [1 1e-7]
a =
    1.0000    0.0000  % a(2) displays as all 0's
>> a(2)
ans =
   1.0000e-07  % but a(2) is really the original 1e-7 value
>> a*10000
ans =
 1.0e+04 *
  1.0000    0.0000
>> format long g
>> a
a =
                       1                     1e-07

[Dan Pron]

"long g" seems to work fine!!

Thanks you very much!

[Image Analyst]

Would you mark this as "Accepted" and "Vote" for it to give James "reputation points"?