MATLAB - Convert Number Character array to Number Integer array/matrix?

10 vues (au cours des 30 derniers jours)
Joe
Joe le 13 Mar 2013
Commenté : Walter Roberson le 21 Fév 2020
*My problem*: Hi, I have an array *A of type char*, that reads like this:
196800271010
902589451069
052068830384
901778191098
I want to turn A into a numerical matrix that will separate the characters into individual number integers like so
[1 9 6 8 0 0 2 7 1 0 1 0
9 0 2 5 8 9 4 5 1 0 6 9
0 5 2 0 6 8 8 3 0 3 8 4
9 0 1 7 7 8 1 9 1 0 9 8]
What is the best way for this? *I've tried* str2num(A), but that treats the characters as one whole number per line (Ie first line is 1.9680) I've also tried this for loop
for i = 1:5 %the number of rows in the char array
s = num2str(A(i,:));
for t = length(s):-1:1
result(t) = str2num(s(t));
end
But this just returns the last line of the array, I want to have all of them. Thanks.

Réponses (2)

Walter Roberson
Walter Roberson le 13 Mar 2013
result = A - '0';
  2 commentaires
Azzi Abdelmalek
Azzi Abdelmalek le 13 Mar 2013
If A is a cell array
char(A)-'0'
Walter Roberson
Walter Roberson le 13 Mar 2013
True. But we are given that A is of type char.

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Mukesh Singla
Mukesh Singla le 19 Fév 2020
Modifié(e) : Walter Roberson le 21 Fév 2020
your code is correct, just one thing you are need to look is that you need to store all the element in the array,
for i = 1:5
s = num2str(A(i,:));
for t = length(s):-1:1
result(i,t) = str2num(s(t));
try this you will get your result
  1 commentaire
Walter Roberson
Walter Roberson le 21 Fév 2020
Needs a couple of end statements.
What is the purpose of the num2str(A(i,:)) step when A is already a character array? num2str() applied to a character vector returns the same vector?

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