multipying character in array number

2 visualizzazioni (ultimi 30 giorni)
i want to create a character array for example if a.*[1 1 1 1] we get [a a a a] thank you.

Risposta accettata

Azzi Abdelmalek
Azzi Abdelmalek il 21 Nov 2016
repmat({'a'} ,1,5)
  1 Commento
best16 programmer
best16 programmer il 21 Nov 2016
thank you. but what if we have a.*[1 -1 1 -1 -1] how can we get [a -a a -a -a]

Accedi per commentare.

Più risposte (2)

Star Strider
Star Strider il 21 Nov 2016
‘what if we have a.*[1 -1 1 -1 -1] how can we get [a -a a -a -a]’
That requires a loop, but it works:
v = [1 -1 1 -1 -1];
a_vec = [];
for k1 = 1:length(v)
if v(k1) > 0
a_vec = [a_vec ' a '];
elseif v(k1) < 0
a_vec = [a_vec '-a '];
elseif v(k1 == 0)
a_vec = [a_vec ' 0 '];
end
end
a_vec =
a -a a -a -a
  3 Commenti
Star Strider
Star Strider il 21 Nov 2016
My pleasure.
Note that it also allows for ‘0’ entries in ‘v’.

Accedi per commentare.


Philip Borghesani
Philip Borghesani il 21 Nov 2016
Modificato: Philip Borghesani il 21 Nov 2016
Did you really want a character array?
>> syms a
>> b=a.*[1 -1 1 -1 -1]
b =
[ a, -a, a, -a, -a]
To get a character array you can do
>> char(b)
ans =
'matrix([[a, -a, a, -a, -a]])'

Prodotti

Community Treasure Hunt

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

Start Hunting!

Translated by