How to process elements in an array using stateflow if-statement?

Question

xiao 2017-2-14

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/324978-how-to-process-elements-in-an-array-using-stateflow-if-statement

回答： Muthukumar Ganesan 2022-7-31

I have a simple if-statement code:

A=[1 3 10 20];
for i=1:length(A)
if A(i)>10
A(i)=10;
end
end

Then the output is: [1 3 10 10] (20->10)

How could I achieve this using stateflow? I made a constant [1 3 10 20], and drawed a chart with if statement:

Diagnosis shows error in "Attempted to assign to Simulink input 'u'. Transition '{u=10}'", which makes sense because input u is an array. I think if the input is a bus signal then may work. How to define the input and output signal as bus? Thanks.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Saurabh Gupta 2017-2-17

在 MATLAB Online 中打开

1) You don't need any loops or if statements in your problem. The following statement performs the same operation.

A(A>10)=10;

2) The error "Attempted to assign to Simulink input 'u'" means that you are trying to change the value of the input, which is not allowed. You should copy the value into another variable and make updates there. For example, you can start with "y=u" and then make changes in variable "y"

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Muthukumar Ganesan 2022-7-31

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/324978-how-to-process-elements-in-an-array-using-stateflow-if-statement#answer_1018770

Hi,

In Stateflow with C action language without using a loop, you have to use Matlab function. i.e. Saurabh's answer can be used inside the inserted matlab function.

Thanks.