Array indices must be positive integers or logical values. Error in ecgtest (line 9) chestNoDC=chest1(0:10000)- meanChest;
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Ghufran Abdul Qayum
le 22 Sep 2021
Commenté : Steven Lord
le 22 Sep 2021
I'm facing this problem whenever I try to plot my values from "0"
Array indices must be positive integers
or logical values.
Error in ecgtestCAH (line 9)
chestNoDC=chest1(0:10000)- meanChest;
can you suggest me what to do to avoid this?
3 commentaires
Image Analyst
le 22 Sep 2021
@Shayan Sepahvand, Can you post your answer below in the Answer Section, not up here in comments where we ask the poster for clarification? Thanks. That way, the poster can "Accept" your answer and you can get reputation points for it.
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Shayan Sepahvand
le 22 Sep 2021
Modifié(e) : Shayan Sepahvand
le 22 Sep 2021
Hi,
The first element of a vector is addressed by 1, not 0: (one-based indexing not zero-based)
X = ones(1000,1);
X = [1:20]%the first 20 elements
X = [0:20]% you will get an error.
try this:
chestNoDC=chest1(1:10000)
2 commentaires
Steven Lord
le 22 Sep 2021
If you call plot with one numeric input MATLAB will use the indices of the elements as the X data, starting at 1.
plot((1:10).^2, 'o-') % using 1:10 as the X data
If you call plot with two numeric inputs MATLAB will use the first as the X data and the second as the Y data.
plot(-10:-1, (1:10).^2, 'o-')
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