how to save past outputs of a function
4 views (last 30 days)
Show older comments
I have the following code :
function NM
options = optimset('Display','iter','TolX',1e-10,'TolFun',1e-10);
[x,fval] = fminsearch(@(x)ban2(x),1,options);
function ban1 = ban2(x)
x1 = x
iono_layer_parms = [x(1), x(2), -1, -1, -1, -1];
[iono, iono_extra] = iri2012(lat, lon, x, UT,ht_start, ht_step,num_hts);
ionofreq = 0.008978663597663*sqrt((10.^(-6))*(iono(1,18:end)));
D6xb = interp1(alt3(101:697),D6xa(101:697),alt(26:175));
D6xc = 0.008978663597663*sqrt(D6xb);
ban = ionofreq(9:158) - D6xc;
ban1 = sum(ban.^2)
I want to save the variables x used in each iteration. I tried using persistent variables at the fourth line of the code but got error message :The PERSISTENT declaration must precede any use of the variable. x.
I also tried to use persistent variables at other places in function ban1 but got the same error message. Any help will be greatly appreciated.
0 Comments
Accepted Answer
dpb
on 9 Mar 2015
Use the output function option to write the function to return the values. There's an example in the documentation that creates a history as you're looking for...
In the local doc for R2012b here there's an example w/ a history specifically like you're asking; that doesn't seem to show up so easily anyway w/ the online doc's...not sure what's changed if anything besides the documentation.
More Answers (0)
See Also
Categories
Find more on Startup and Shutdown in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!