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arraysstringmatlab
Dan S
Dan S

Reputation: 11

How to reference an array of character vectors

I want to create an array of character vectors like this:

'abc1', 'abc12', 'abc9'

Two questions: How do I initialize this, and how do I reference each element?

I want to read a bunch of values from a file and create the array from each line. The file will look like this:

abc1 abc12 abc9

Once read in, I want to use each character vector like the following:

for i in <mumble>
    fprintf(" element = %s\n", <mumble-one-element>)
end

(printing is just the easiest way to represent that I want to access each element in the array.)

I'm a newbie to MATLAB and am having a hard time translating array usage to other languages I know.

Upvotes: 0

Views: 67

Answers (1)

Banghua Zhao
Banghua Zhao

Reputation: 1556

Use fgetl to read a line from the file and strsplit to create a cell array.

Suppose test.txt is your file, which has the following data:

abc1 abc12 abc9
abc4 abc5 abc6

Read the file line by line and create the corresponding cell array:

fileID = fopen('test.txt');

tline = fgetl(fileID);
while ischar(tline)
    cell_array = strsplit(tline);
    for i = 1:length(cell_array)
        fprintf(" element = %s\n", cell_array{i});
    end
    fprintf("\n");
    tline = fgetl(fileID);
end

fclose(fileID);

Output:

 element = abc1
 element = abc12
 element = abc9

 element = abc4
 element = abc5
 element = abc6

Upvotes: 2

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