フィルターのクリア

How not to display error message from fzero

13 ビュー (過去 30 日間)
Roberto Gargiulo
Roberto Gargiulo 2021 年 3 月 9 日
コメント済み: Roberto Gargiulo 2021 年 3 月 9 日
I've defined the function:
function zeros = findzeros(myf,n_points,min,max)
x = ones(n_points,1);
starting_points=linspace(min,max,n_points);
% warning('off')
for i=1:n_points
try
x(i) = fzero(myf, starting_points(i));
catch
fprintf('No root found');
end
end
x = x(x>=min);
zeros = [x(diff(x)>1e-12); x(1)];
end
In the while looping if often happens that there's an error. I tried using trycatch as suggested elsewhere, but it still results in error messages such as:
Exiting fzero: aborting search for an interval containing a sign change
because no sign change is detected during search.
Function may not have a root.
And there's no messa 'No root found' printed. How can I fix this?

採用された回答

Walter Roberson
Walter Roberson 2021 年 3 月 9 日
function zeros = findzeros(myf, n_points, xmin, xmax)
x = ones(n_points,1);
starting_points = linspace(xmin, xmax, n_points);
opts = optimset('display', 'none');
for i=1:n_points
x(i) = fzero(myf, starting_points(i), opts);
end
x = x(x >= xmin);
zeros = [x(diff(x)>1e-12); x(1)];
end
  1 件のコメント
Roberto Gargiulo
Roberto Gargiulo 2021 年 3 月 9 日
Thanks a lot! Now it works perfectly (and the code has a better format)

サインインしてコメントする。

その他の回答 (0 件)

カテゴリ

Help Center および File ExchangeProgramming Utilities についてさらに検索

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by