How do I store values from a function in an array within a for loop?

Question

Nicole Mezher 2020-2-25

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/507530-how-do-i-store-values-from-a-function-in-an-array-within-a-for-loop

评论： Guillaume 2020-2-25

for i=119:0.1:125
    Shift_Vm= GHK(Nai,Ki,Cli,i,Ko,Clo,P_RestNa,P_RestK,P_RestCl);
    x(i)=Shift_Vm
end
plot(x)

I am getting the error:Array indices must be positive integers or logical values.

Error in Nicole_HW2 (line 31)

x(i)=Shift_Vm

How do I store each value of Shift_Vm to an array so I can plot it

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Guillaume 2020-2-25

3
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/507530-how-do-i-store-values-from-a-function-in-an-array-within-a-for-loop#answer_417327

在 MATLAB Online 中打开

something = 119:0.1:125;  %give this variable a better name, a name that actually describes what the variable contain
x = zeros(size(something));  %preallocate the output for efficiency
for i = 1:numel(something)
    x(i) = GHK(Nai,Ki,Cli,something(i),Ko,Clo,P_RestNa,P_RestK,P_RestCl);
end

2 个评论
显示无隐藏无

Nicole Mezher 2020-2-25

Thank you, it worked. One quick thing, How can I plot my results as the steps being the x axis and the values from the function being the y axis. I tried it but I keep getting the wrong graph as a result