Combine Strrep in one Line.
2 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
FishermanJack
el 30 de Nov. de 2017
Comentada: FishermanJack
el 4 de Dic. de 2017
Hi, is there any way that i Combine strrep as one line in my Code for different values. for example.
a = strrep(a, 'x','y'); a = strrep(a, 'z','w');
0 comentarios
Respuesta aceptada
KL
el 30 de Nov. de 2017
use replace with cell arrays,
a = 'abcxyz'
old = {'x';'z'};
new = {'y';'w'};
a = replace(a, old,new)
3 comentarios
KL
el 30 de Nov. de 2017
sorry, that does not work for me
What does it mean? Do you get an error message?
My guess would be that you're using a matlab version older than 2016b. Anywayt try regexprep,
a = regexprep(a, old,new);
Más respuestas (1)
Jan
el 30 de Nov. de 2017
Editada: Jan
el 30 de Nov. de 2017
has = 'xy';
rep = 'zw';
[Lia, Locb] = ismember(a, has);
a(Lia) = rep(Locb);
[EDITED] I assume strrep has less overhead. For many changes, a lookup table will be more efficient:
function s = StrRepList(s, old, new)
if numel(old) < 20 % GUESSED limit!
for k = 1:numel(old)
s = strrep(s, old(k), new(k));
end
else
lut = char(0):char(255);
lut(old + 1) = new;
s = lut(s + 1);
end
end
Some tests with tic/toc will help to find a suitable limit to decide for a strrep loop or a lookup table method. Maybe it depends on the size of s also.
2 comentarios
Ver también
Categorías
Más información sobre String Parsing en Help Center y File Exchange.
Productos
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!