How do I specify the limits of parameters individually while fitting?
16 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Basil Eldeeb
am 4 Mär. 2021
Beantwortet: Nagasai Bharat
am 11 Mär. 2021
On top of not knowing how to specifically limit 1 parameter to positive numbers, I get this error for my custom model:
Error using
fittype/testCustomModelEvaluation
(line 16)
Custom equations must produce an
output vector, matrix, or array that
is the same size and shape as the
input data. This custom equation
fails to meet that requirement:
m*exp(-d/x)*x.^2
Here is my code:
data = readmatrix('nagn125.txt');
vv=data(:,1);
ii=data(:,2);
pos=vv>0; neg=~pos;
gpos=fittype(@(m,c,d,x) m*exp(-c)*exp(-d/x)*x.^2);
options=fitoptions('exp(-d/x)','Lower',0);
plot(fneg,vv(neg),ii(neg))
grid('on')
0 Kommentare
Akzeptierte Antwort
Nagasai Bharat
am 11 Mär. 2021
Hi,
Change the fittype statement to that of below. This should solve the error you are getting
gpos=fittype(@(m,c,d,x) m.*exp(-c).*exp(-d./x).*x.^2);
0 Kommentare
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Interpolation finden Sie in Help Center und File Exchange
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!