Import data from Excel

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Francis Chabot
Francis Chabot on 1 Feb 2021
Commented: Francis Chabot on 1 Feb 2021
Hello,
I'm trying to input data from Excel by column and when doing it the first data which is suppose to end up in a NaN doesn't appear.
Example:
MTBV = xlsread('G-Score','Active Data','B4:B13');
When I'm inputing it the B4 data which is suppose to be a NaN is ignored by MATLAB. This problem is only with the first data because the other ones are considered as NaN when I input them.
Best regards,
  1 Comment
Francis Chabot
Francis Chabot on 1 Feb 2021
I'm getting: [2.29, 1.56, 1.87, NaN...]
Instead of getting: [NaN, 2.29, 1.56, 1.87, NaN...]

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Answers (1)

Fangjun Jiang
Fangjun Jiang on 1 Feb 2021
xlsread() tries to be smart. It tries its best to give you the numerical data so it truncates the leading Nan. Run this to see
[Num,Txt,Raw]=xlsread('G-Score','Active Data','B4:B13')
  1 Comment
Francis Chabot
Francis Chabot on 1 Feb 2021
When doing it, the array of doubles which countain the data still exclude the first data which should return as a NaN but all of the others NaNs are shown correctly.
I don't get why it doesn't return me a NaN for the first data.

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