How to create numeric array from a string in Matlab?
For example I have such a string:
>> str = dec2bin(7);
s = 111
I need the array [1 1 1]. How to do it?
I see strread function strread
but I get difficulties to use it with non-space string input.
The standard solution is to use the solution posted by yuk,
a = (str == '1');
which produces a logical result. If you need a double,
a = double(str == '1');
or even just:
a = +(str == '1');
Perhaps the simplest looking solution is this one:
a = str - 48;
although I think the last is least obvious as to what it does. I prefer code that is easy to read and understand the purpose. That goal is best met by the second solution, IMHO.
Just answered another question and found a part of it might be useful here.
You can actually convert such a string to a logical vector:
a = str == '1';
You can cast it to another type, for example double(a).
I suppose, naively:
n = length(s);
myArray = zeros(1,n)
for i = 1:n
myArray(i) = double(s(i));
where "double()" is whatever the command is for changing a string element to a double precision number, if that is indeed what you want.
With strread:
a = strread('123', '%c')
The answer is using "bitget"
> x = bitget(7,1:3);
> class(bitget(7,1:3))
ans =
double
The result is double.
