I keep getting this error, Array indices must be positive integers or logical values. Error in Problem_4 (line 11) for k=2:length(t)

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DereK Halverson 2020-2-22

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关闭： MATLAB Answer Bot 2021-8-20

density=8495;
diameter=.015;
length=.045;
Cp=4208;
Ts=20;
clc
table=xlsread('RDData.xlsx','palm oil','A1:B609');
t=table(:,1);
T=table(:,2);
A=[t,T];
for k=2:length(t)
  delt=(t(k-1)-t(k))
  %for L=2:length(T)
       %delT=(T(L-1)-T(L));
 % end
end
%b=[delt,delT]

(This is my code can anyone tell me why this isnt running?)

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Answer 1

Image Analyst 2020-2-22

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编辑：Image Analyst 2020-2-22

See The FAQ

By the way, you forgot ot attach 'RDData.xlsx' so we can't run your code.

And you forgot to attach the entire error message -- ALL the red text including the line of text that threw the error.

Also, never use a built-in function/keyword, like "table" for the name of your variable.

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Steven Lord 2020-2-22

While your last example is absolutely valid, in this situation using the name of the built-in length function as a variable name is a bigger problem than using the name table, as it doesn't look like this code tries to call table but does try to call length.