why i get Array indices must be positive integers or logical values.

can you help me in this code i did everthing and how can i solve it .

i get Array indices must be positive integers or logical values.

plz help

Array indices must be positive integers or logical values.

Error in Untitled (line 98)

z(length(R),length(R)-1) = -R(length(R)-1) ; %This is the last mesh = element [n*n-1]

[the cyclist]

What is the full error message, and what line gives this error?

Can you give a small example of inputs you used, that result in this error?

[Ali Al raeesi]

i think R is making this error

[KSSV]

Error is clear......you are inputting indices either 0 or negative values or fractions. In MATLAB array indices should b always posittive integers.

[Walter Roberson]

It looks to me as if R is empty, such as if the user just pressed return at the input prompt.

[Ali Al raeesi]

i did not get

[Ali Al raeesi]

@KSSV but all input are real and positve and not fractions

[the cyclist]

Again, @Ali Al raeesi, I ask that you provide specific inputs that create the error, so that we do not have to guess. For example, what would the user type when asked for the input for R?

Answer 1

[the cyclist]

In this line

z(length(R),length(R)-1) =  -R(length(R)-1)

if the user enters a resistance vector that is length 1, then you try to access R(0), which will give that error.