How can I skip initialization for a variable in further executions?
1 view (last 30 days)
Show older comments
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 Comment
Raghav
on 8 Apr 2015
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.
Answers (1)
Star Strider
on 24 Mar 2015
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.
8 Comments
See Also
Categories
Find more on Startup and Shutdown in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!