"Array indices must be positive integers or logical values." - a new problem

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Don
Don 2021-10-18
编辑： Cris LaPierre 2021-10-18
First = input('Enter time (secs) for TPlot START \n');
Last = input('Enter time (secs) for TPlot END \n');
Last1 = min(vlength1(2),vlength2(2))-20;
Last2 = min(Last, Last1);
x= Gp1Site2Site1(First:Last2);
y= Gp2Site2Site1(First:Last2);
Array indices must be positive integers or logical values.
Error in MovAvg (line 418)
x= Gp1Site2Site1(First:Last2);
This has worked OK for years. Now it works sometimes but not consistently
Here is the olnly other code than has changed:
'C:\Projects\ParkinsonsProject\JaneBird\'
I cannot find the problem Can anyone spot the issue"

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回答（1 个）

Cris LaPierre
Cris LaPierre 2021-10-18
编辑：Cris LaPierre 2021-10-18
Ran in:
What are your input values for First and Last? What are the values for vlength1 and vlength2?
The error means you are trying to use either negative or decimal values to index a variable. Indices must be integer values >=1.
A = 1:3;
% Works when index is an integer
a = A(2)
a = 2
% Error when index is a decimal
b = A(1.2)
Array indices must be positive integers or logical values.

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