How can I skip initialization for a variable in further executions?
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I want to skip initialization of my variable in further executions of my function, except for the first time. e.g.
w_hat = w_nom; %initialization
w_hat = w_hat + del_w; %update of my variable
So for the first time I want w_hat to hold the value of w_nom, but in the next step when the function is recalled, I want w_hat to hold the value from its previous update. So how do I skip the initialization in the second and further steps?
Thanks in advance! I hope I was clear with my question.
**Updated: I will implement the function file in SIMULINK and so except for the first time the function is called, the objective is to initiate w_hat with the previous updated w_hat.
1 个评论
Raghav
2015-4-8
You can make use of persistent variables in this situation. Ex:
persistant w_hat;
if(isempty(w_hat))
w_hat = w_nom; %initialization
else
w_hat = w_hat + del_w; %update of my variable
end
Have a look at 'inmem' command as well. Hope this is what you were looking for.
回答(1 个)
Star Strider
2015-3-24
You are not re-initialising it, you are reassigning it with a new value with the update.
I believe that is what you want to do.
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