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How to convert string to array

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mor zarfati
mor zarfati 2017-4-23
评论： Shayla Lussiné 2023-3-31
I have a list of names in a string variable ( for example "'a','b','c'") and i need to convert it to an array [a;b;c]. is there a way to do this? thank you!

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回答（4 个）

amine&&
amine&& 2017-4-23
Hello, you can see the documentation for str2num() in https://fr.mathworks.com/help/matlab/ref/str2num.html.
mor zarfati
mor zarfati 2017-4-23
hi, my variables are not numbers, they are gene names so i cannot convert to numbers. thank you!
Image Analyst
Image Analyst 2017-4-23
编辑：Image Analyst 2017-4-23
Use char:
% Define cell array of strings:
ca = {'a','b','c', 'demo', 'long string'}
% Make character array
charArray = char(ca)
Shows:
ca =
1×5 cell array
'a' 'b' 'c' 'demo' 'long string'
charArray =
a
b
c
demo
long string
Shayla Lussiné
Shayla Lussiné 2023-3-31
移动：Stephen23 2023-3-31
It is not necessary to convert it in a array 'cuz when you enter the text, this is already an array of characters. For example, if you enter text = 'hello', when you put text(1) the result will be 'h'. It's just like with the numbers.
  2 个评论
Image Analyst
Image Analyst 2023-3-31
编辑：Image Analyst 2023-3-31
Ran in:
text is a built in function and should not be used for variable names. I think what you meant was
plot((1 : 5), randi(8, 1, 5), 'b.-', 'LineWidth', 2);
grid on;
str = 'Hello Shayla';
x = 2;
y = 5; % Whatever.
text(x, y, str, 'FontSize', 30, 'FontWeight', 'bold', 'Color', 'r');
text(x, 4, str(1), 'FontSize', 30, 'FontWeight', 'bold', 'Color', 'm');
Shayla Lussiné
Shayla Lussiné 2023-3-31
I didn't knew that, and thanks for the correction. What I mean was if you insert a string of characters in a variable and if you want to use one of the letters you just simply type the position. Like
my_variable='abc'
%in case "abc" then just char(my_variable)
my_variable(1)

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