Vector values replaced by zeros
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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...
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Respuestas (1)
James Tursa
el 18 de Mzo. de 2015
Editada: James Tursa
el 18 de Mzo. de 2015
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
2 comentarios
Image Analyst
el 18 de Mzo. de 2015
Would you mark this as "Accepted" and "Vote" for it to give James "reputation points"?
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